diff --git a/LICENSE b/LICENSE
index fe6b9036..97408745 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,662 +1,517 @@
-                    GNU AFFERO GENERAL PUBLIC LICENSE
-                       Version 3, 19 November 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
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+SPDX-License-Idnetifier: SSPL-1.0 
+
+
+
+Server Side Public License, v 1 
+==============================================================================
+
+
+VERSION 1, OCTOBER 16, 2018
+
+Copyright © 2018 MongoDB, Inc.
+
+Everyone is permitted to copy and distribute verbatim copies of this license
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+TERMS AND CONDITIONS
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+0. Definitions. ----------------------------------------------------------------
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 recipients a copy of this License along with the Program.
 
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+comes into possession of a copy. This License will therefore apply, along with
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+6. Conveying Non-Source Forms. ---------------------------------------------------
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+You may convey a covered work in object code form under the terms of sections 4
+and 5, provided that you also convey the machine-readable Corresponding Source
+under the terms of this License, in one of these ways:
+
+a) Convey the object code in, or embodied in, a physical product (including a
+physical distribution medium), accompanied by the Corresponding Source fixed on
+a durable physical medium customarily used for software interchange. b) Convey
+the object code in, or embodied in, a physical product (including a physical
+distribution medium), accompanied by a written offer, valid for at least three
+years and valid for as long as you offer spare parts or customer support for
+that product model, to give anyone who possesses the object code either (1) a
+copy of the Corresponding Source for all the software in the product that is
+covered by this License, on a durable physical medium customarily used for
+software interchange, for a price no more than your reasonable cost of
+physically performing this conveying of source, or (2) access to copy the
+Corresponding Source from a network server at no charge. c) Convey individual
+copies of the object code with a copy of the written offer to provide the
+Corresponding Source. This alternative is allowed only occasionally and
+noncommercially, and only if you received the object code with such an offer, in
+accord with subsection 6b. d) Convey the object code by offering access from a
+designated place (gratis or for a charge), and offer equivalent access to the
+Corresponding Source in the same way through the same place at no further
+charge. You need not require recipients to copy the Corresponding Source along
+with the object code. If the place to copy the object code is a network server,
+the Corresponding Source may be on a different server (operated by you or a
+third party) that supports equivalent copying facilities, provided you maintain
+clear directions next to the object code saying where to find the Corresponding
+Source. Regardless of what server hosts the Corresponding Source, you remain
+obligated to ensure that it is available for as long as needed to satisfy these
+requirements. e) Convey the object code using peer-to-peer transmission,
+provided you inform other peers where the object code and Corresponding Source
+of the work are being offered to the general public at no charge under
+subsection 6d. A separable portion of the object code, whose source code is
+excluded from the Corresponding Source as a System Library, need not be included
+in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any tangible
+personal property which is normally used for personal, family, or household
+purposes, or (2) anything designed or sold for incorporation into a dwelling. In
+determining whether a product is a consumer product, doubtful cases shall be
+resolved in favor of coverage. For a particular product received by a particular
+user, "normally used" refers to a typical or common use of that class of
+product, regardless of the status of the particular user or of the way in which
+the particular user actually uses, or expects or is expected to use, the
+product. A product is a consumer product regardless of whether the product has
+substantial commercial, industrial or non-consumer uses, unless such uses
+represent the only significant mode of use of the product.
+
+"Installation Information" for a User Product means any methods, procedures,
+authorization keys, or other information required to install and execute
+modified versions of a covered work in that User Product from a modified version
+of its Corresponding Source. The information must suffice to ensure that the
+continued functioning of the modified object code is in no case prevented or
+interfered with solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as part of a
+transaction in which the right of possession and use of the User Product is
+transferred to the recipient in perpetuity or for a fixed term (regardless of
+how the transaction is characterized), the Corresponding Source conveyed under
+this section must be accompanied by the Installation Information. But this
+requirement does not apply if neither you nor any third party retains the
+ability to install modified object code on the User Product (for example, the
+work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates for a
+work that has been modified or installed by the recipient, or for the User
+Product in which it has been modified or installed. Access to a network may be
+denied when the modification itself materially and adversely affects the
+operation of the network or violates the rules and protocols for communication
+across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord
+with this section must be in a format that is publicly documented (and with an
+implementation available to the public in source code form), and must require no
+special password or key for unpacking, reading or copying.
+
+7. Additional Terms. ----------------------------------------------------------
+
+"Additional permissions" are terms that supplement the terms of this License by
+making exceptions from one or more of its conditions. Additional permissions
+that are applicable to the entire Program shall be treated as though they were
+included in this License, to the extent that they are valid under applicable
+law. If additional permissions apply only to part of the Program, that part may
+be used separately under those permissions, but the entire Program remains
+governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any
+additional permissions from that copy, or from any part of it. (Additional
+permissions may be written to require their own removal in certain cases when
+you modify the work.) You may place additional permissions on material, added by
+you to a covered work, for which you have or can give appropriate copyright
+permission.
+
+Notwithstanding any other provision of this License, for material you add to a
+covered work, you may (if authorized by the copyright holders of that material)
+supplement the terms of this License with terms:
+
+a)Disclaiming warranty or limiting liability differently from the terms of
+sections 15 and 16 of this License; or b) Requiring preservation of specified
+reasonable legal notices or author attributions in that material or in the
+Appropriate Legal Notices displayed by works containing it; or c) Prohibiting
+misrepresentation of the origin of that material, or requiring that modified
+versions of such material be marked in reasonable ways as different from the
+original version; or d) Limiting the use for publicity purposes of names of
+licensors or authors of the material; or e) Declining to grant rights under
+trademark law for use of some trade names, trademarks, or service marks; or f)
+Requiring indemnification of licensors and authors of that material by anyone
+who conveys the material (or modified versions of it) with contractual
+assumptions of liability to the recipient, for any liability that these
+contractual assumptions directly impose on those licensors and authors. All
+other non-permissive additional terms are considered "further restrictions"
+within the meaning of section 10. If the Program as you received it, or any part
+of it, contains a notice stating that it is governed by this License along with
+a term that is a further restriction, you may remove that term. If a license
+document contains a further restriction but permits relicensing or conveying
+under this License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does not survive
+such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place,
+in the relevant source files, a statement of the additional terms that apply to
+those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a
+separately written license, or stated as exceptions; the above requirements
+apply either way.
+
+8.Termination. --------------------------------------------------------------------
+
+You may not propagate or modify a covered work except as expressly provided
+under this License. Any attempt otherwise to propagate or modify it is void, and
+will automatically terminate your rights under this License (including any
+patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a
+particular copyright holder is reinstated (a) provisionally, unless and until
+the copyright holder explicitly and finally terminates your license, and (b)
+permanently, if the copyright holder fails to notify you of the violation by
+some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated
+permanently if the copyright holder notifies you of the violation by some
+reasonable means, this is the first time you have received notice of violation
+of this License (for any work) from that copyright holder, and you cure the
+violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of
+parties who have received copies or rights from you under this License. If your
+rights have been terminated and not permanently reinstated, you do not qualify
+to receive new licenses for the same material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+---------------------------------------------------------------------------
+
+You are not required to accept this License in order to receive or run a copy of
+the Program. Ancillary propagation of a covered work occurring solely as a
+consequence of using peer-to-peer transmission to receive a copy likewise does
+not require acceptance. However, nothing other than this License grants you
+permission to propagate or modify any covered work. These actions infringe
+copyright if you do not accept this License. Therefore, by modifying or
+propagating a covered work, you indicate your acceptance of this License to do
+so.
+
+10. Automatic Licensing of Downstream Recipients.
+-------------------------------------------------------------------------------
+
+Each time you convey a covered work, the recipient automatically receives a
+license from the original licensors, to run, modify and propagate that work,
+subject to this License. You are not responsible for enforcing compliance by
+third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an
 organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations.  If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-  You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License.  For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
-
-  11. Patents.
-
-  A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based.  The
-work thus licensed is called the contributor's "contributor version".
-
-  A contributor's "essential patent claims" are all patent claims
-owned or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version.  For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-  Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-  In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement).  To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-  If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients.  "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-  If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-  A patent license is "discriminatory" if it does not include within
-the scope of its coverage, prohibits the exercise of, or is
-conditioned on the non-exercise of one or more of the rights that are
-specifically granted under this License.  You may not convey a covered
-work if you are a party to an arrangement with a third party that is
-in the business of distributing software, under which you make payment
-to the third party based on the extent of your activity of conveying
-the work, and under which the third party grants, to any of the
-parties who would receive the covered work from you, a discriminatory
-patent license (a) in connection with copies of the covered work
-conveyed by you (or copies made from those copies), or (b) primarily
-for and in connection with specific products or compilations that
-contain the covered work, unless you entered into that arrangement,
-or that patent license was granted, prior to 28 March 2007.
-
-  Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
-
-  12. No Surrender of Others' Freedom.
-
-  If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you may
-not convey it at all.  For example, if you agree to terms that obligate you
-to collect a royalty for further conveying from those to whom you convey
-the Program, the only way you could satisfy both those terms and this
+organization, or merging organizations. If propagation of a covered work results
+from an entity transaction, each party to that transaction who receives a copy
+of the work also receives whatever licenses to the work the party's predecessor
+in interest had or could give under the previous paragraph, plus a right to
+possession of the Corresponding Source of the work from the predecessor in
+interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights
+granted or affirmed under this License. For example, you may not impose a
+license fee, royalty, or other charge for exercise of rights granted under this
+License, and you may not initiate litigation (including a cross-claim or
+counterclaim in a lawsuit) alleging that any patent claim is infringed by
+making, using, selling, offering for sale, or importing the Program or any
+portion of it.
+
+11. Patents. -------------------------------------------------------------------
+
+A "contributor" is a copyright holder who authorizes use under this License of
+the Program or a work on which the Program is based. The work thus licensed is
+called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or
+controlled by the contributor, whether already acquired or hereafter acquired,
+that would be infringed by some manner, permitted by this License, of making,
+using, or selling its contributor version, but do not include claims that would
+be infringed only as a consequence of further modification of the contributor
+version. For purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent
+license under the contributor's essential patent claims, to make, use, sell,
+offer for sale, import and otherwise run, modify and propagate the contents of
+its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement
+or commitment, however denominated, not to enforce a patent (such as an express
+permission to practice a patent or covenant not to sue for patent infringement).
+To "grant" such a patent license to a party means to make such an agreement or
+commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the
+Corresponding Source of the work is not available for anyone to copy, free of
+charge and under the terms of this License, through a publicly available network
+server or other readily accessible means, then you must either (1) cause the
+Corresponding Source to be so available, or (2) arrange to deprive yourself of
+the benefit of the patent license for this particular work, or (3) arrange, in a
+manner consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have actual
+knowledge that, but for the patent license, your conveying the covered work in a
+country, or your recipient's use of the covered work in a country, would
+infringe one or more identifiable patents in that country that you have reason
+to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you
+convey, or propagate by procuring conveyance of, a covered work, and grant a
+patent license to some of the parties receiving the covered work authorizing
+them to use, propagate, modify or convey a specific copy of the covered work,
+then the patent license you grant is automatically extended to all recipients of
+the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of
+its coverage, prohibits the exercise of, or is conditioned on the non-exercise
+of one or more of the rights that are specifically granted under this License.
+You may not convey a covered work if you are a party to an arrangement with a
+third party that is in the business of distributing software, under which you
+make payment to the third party based on the extent of your activity of
+conveying the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory patent
+license (a) in connection with copies of the covered work conveyed by you (or
+copies made from those copies), or (b) primarily for and in connection with
+specific products or compilations that contain the covered work, unless you
+entered into that arrangement, or that patent license was granted, prior to 28
+March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied
+license or other defenses to infringement that may otherwise be available to you
+under applicable patent law.
+
+12. No Surrender of Others' Freedom. --------------------------------------
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not excuse
+you from the conditions of this License. If you cannot use, propagate or convey
+a covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may not
+use, propagate or convey it at all. For example, if you agree to terms that
+obligate you to collect a royalty for further conveying from those to whom you
+convey the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
 
-  13. Remote Network Interaction; Use with the GNU General Public License.
-
-  Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
-interacting with it remotely through a computer network (if your version
-supports such interaction) an opportunity to receive the Corresponding
-Source of your version by providing access to the Corresponding Source
-from a network server at no charge, through some standard or customary
-means of facilitating copying of software.  This Corresponding Source
-shall include the Corresponding Source for any work covered by version 3
-of the GNU General Public License that is incorporated pursuant to the
-following paragraph.
-
-  Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
-combined work, and to convey the resulting work.  The terms of this
-License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
-3 of the GNU General Public License.
-
-  14. Revised Versions of this License.
-
-  The Free Software Foundation may publish revised and/or new versions of
-the GNU Affero General Public License from time to time.  Such new versions
-will be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-  Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU Affero General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation.  If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever published
-by the Free Software Foundation.
-
-  If the Program specifies that a proxy can decide which future
-versions of the GNU Affero General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-  Later license versions may give you additional or different
-permissions.  However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-  15. Disclaimer of Warranty.
-
-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published
-    by the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source.  For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code.  There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for the
-specific requirements.
-
-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
-<https://www.gnu.org/licenses/>.
-
+13. Offering the Program as a Service. ----------------------------------------
+
+If you make the functionality of the Program or a modified version available to
+third parties as a service, you must make the Service Source Code available via
+network download to everyone at no charge, under the terms of this License.
+Making the functionality of the Program or modified version available to third
+parties as a service includes, without limitation, enabling third parties to
+interact with the functionality of the Program or modified version remotely
+through a computer network, offering a service the value of which entirely or
+primarily derives from the value of the Program or modified version, or offering
+a service that accomplishes for users the primary purpose of the Program or
+modified version.
+
+"Service Source Code" means the Corresponding Source for the Program or the
+modified version, and the Corresponding Source for all programs that you use to
+make the Program or modified version available as a service, including, without
+limitation, management software, user interfaces, application program
+interfaces, automation software, monitoring software, backup software, storage
+software and hosting software, all such that a user could run an instance of the
+service using the Service Source Code you make available.
+
+14. Revised Versions of this License. ----------------------------------------
+
+MongoDB, Inc. may publish revised and/or new versions of the Server Side Public
+License from time to time. Such new versions will be similar in spirit to the
+present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies
+that a certain numbered version of the Server Side Public License "or any later
+version" applies to it, you have the option of following the terms and
+conditions either of that numbered version or of any later version published by
+MongoDB, Inc. If the Program does not specify a version number of the Server
+Side Public License, you may choose any version ever published by MongoDB, Inc.
+
+If the Program specifies that a proxy can decide which future versions of the
+Server Side Public License can be used, that proxy's public statement of
+acceptance of a version permanently authorizes you to choose that version for
+the Program.
+
+Later license versions may give you additional or different permissions.
+However, no additional obligations are imposed on any author or copyright holder
+as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty. -----------------------------------------------------
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
+PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
+EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE
+QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability. -----------------------------------------------------
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS
+PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
+INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
+THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
+INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
+PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY
+HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+----------------------------------------------------------------------------------
+
+If the disclaimer of warranty and limitation of liability provided above cannot
+be given local legal effect according to their terms, reviewing courts shall
+apply local law that most closely approximates an absolute waiver of all civil
+liability in connection with the Program, unless a warranty or assumption of
+liability accompanies a copy of the Program in return for a fee.
+
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the Server Side Public License, version 1, as published by MongoDB,
+Inc. This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the Server Side Public License for more details.
+You should have received a copy of the Server Side Public License along with
+this program.
+<http://www.mongodb.com/licensing/server-side-public-license>.
diff --git a/contracts/controllers/Controller.sol b/contracts/controllers/Controller.sol
index 16db9cd3..05e0cb93 100644
--- a/contracts/controllers/Controller.sol
+++ b/contracts/controllers/Controller.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/controllers/DelegatedController.sol b/contracts/controllers/DelegatedController.sol
index ac2f5172..a605798e 100644
--- a/contracts/controllers/DelegatedController.sol
+++ b/contracts/controllers/DelegatedController.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/exploits/EvilGauge.sol b/contracts/exploits/EvilGauge.sol
index 62e0b0c9..6675d6c7 100644
--- a/contracts/exploits/EvilGauge.sol
+++ b/contracts/exploits/EvilGauge.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity =0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/contracts/registries/YRegistry.sol b/contracts/registries/YRegistry.sol
index a84ede3e..e589523d 100644
--- a/contracts/registries/YRegistry.sol
+++ b/contracts/registries/YRegistry.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/CurveYCRVVoter.sol b/contracts/strategies/CurveYCRVVoter.sol
index 84f5a5b5..07a093dc 100644
--- a/contracts/strategies/CurveYCRVVoter.sol
+++ b/contracts/strategies/CurveYCRVVoter.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyCreamYFI.sol b/contracts/strategies/StrategyCreamYFI.sol
index c540e0e3..5cf0cc41 100644
--- a/contracts/strategies/StrategyCreamYFI.sol
+++ b/contracts/strategies/StrategyCreamYFI.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyCurve3CrvVoterProxy.sol b/contracts/strategies/StrategyCurve3CrvVoterProxy.sol
index 5d48c0ca..b1412b26 100644
--- a/contracts/strategies/StrategyCurve3CrvVoterProxy.sol
+++ b/contracts/strategies/StrategyCurve3CrvVoterProxy.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/contracts/strategies/StrategyCurveBTCVoterProxy.sol b/contracts/strategies/StrategyCurveBTCVoterProxy.sol
index c9acbe45..4c1074b7 100644
--- a/contracts/strategies/StrategyCurveBTCVoterProxy.sol
+++ b/contracts/strategies/StrategyCurveBTCVoterProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyCurveBUSDVoterProxy.sol b/contracts/strategies/StrategyCurveBUSDVoterProxy.sol
index a1237518..085e5aa7 100644
--- a/contracts/strategies/StrategyCurveBUSDVoterProxy.sol
+++ b/contracts/strategies/StrategyCurveBUSDVoterProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyCurveYVoterProxy.sol b/contracts/strategies/StrategyCurveYVoterProxy.sol
index ba76dcc7..7f16d40e 100644
--- a/contracts/strategies/StrategyCurveYVoterProxy.sol
+++ b/contracts/strategies/StrategyCurveYVoterProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyDAICurve.sol b/contracts/strategies/StrategyDAICurve.sol
index 20fe5639..ada32256 100644
--- a/contracts/strategies/StrategyDAICurve.sol
+++ b/contracts/strategies/StrategyDAICurve.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyDForceUSDC.sol b/contracts/strategies/StrategyDForceUSDC.sol
index fd3287a6..ef2989d2 100644
--- a/contracts/strategies/StrategyDForceUSDC.sol
+++ b/contracts/strategies/StrategyDForceUSDC.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyDForceUSDT.sol b/contracts/strategies/StrategyDForceUSDT.sol
index 27fe001d..ffe349c3 100644
--- a/contracts/strategies/StrategyDForceUSDT.sol
+++ b/contracts/strategies/StrategyDForceUSDT.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyMKRVaultDAIDelegate.sol b/contracts/strategies/StrategyMKRVaultDAIDelegate.sol
index 8cf070df..31bd8f5f 100644
--- a/contracts/strategies/StrategyMKRVaultDAIDelegate.sol
+++ b/contracts/strategies/StrategyMKRVaultDAIDelegate.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/contracts/strategies/StrategyProxy.sol b/contracts/strategies/StrategyProxy.sol
index a5d181dc..c01adcf0 100644
--- a/contracts/strategies/StrategyProxy.sol
+++ b/contracts/strategies/StrategyProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyTUSDCurve.sol b/contracts/strategies/StrategyTUSDCurve.sol
index 9e9fd45e..233b6eee 100644
--- a/contracts/strategies/StrategyTUSDCurve.sol
+++ b/contracts/strategies/StrategyTUSDCurve.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyVaultUSDC.sol b/contracts/strategies/StrategyVaultUSDC.sol
index 05dd3f93..61ae884b 100644
--- a/contracts/strategies/StrategyVaultUSDC.sol
+++ b/contracts/strategies/StrategyVaultUSDC.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/strategies/StrategyYFIGovernance.sol b/contracts/strategies/StrategyYFIGovernance.sol
index 463fbb2a..d43e7dff 100644
--- a/contracts/strategies/StrategyYFIGovernance.sol
+++ b/contracts/strategies/StrategyYFIGovernance.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/contracts/test/Token.sol b/contracts/test/Token.sol
index ba36174c..b1cc87e3 100644
--- a/contracts/test/Token.sol
+++ b/contracts/test/Token.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/ERC20.sol";
diff --git a/contracts/utils/BTCOSMedianizer.sol b/contracts/utils/BTCOSMedianizer.sol
index 06605992..65fe561b 100644
--- a/contracts/utils/BTCOSMedianizer.sol
+++ b/contracts/utils/BTCOSMedianizer.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/math/SafeMath.sol";
diff --git a/contracts/utils/ETHOSMedianizer.sol b/contracts/utils/ETHOSMedianizer.sol
index 862f5ce1..26f22cf1 100644
--- a/contracts/utils/ETHOSMedianizer.sol
+++ b/contracts/utils/ETHOSMedianizer.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "../../interfaces/maker/OracleSecurityModule.sol";
diff --git a/contracts/vaults/yDelegatedVault.sol b/contracts/vaults/yDelegatedVault.sol
index ac07fe20..563542d1 100644
--- a/contracts/vaults/yDelegatedVault.sol
+++ b/contracts/vaults/yDelegatedVault.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/contracts/vaults/yVault.sol b/contracts/vaults/yVault.sol
index 953c17fc..e503cce2 100644
--- a/contracts/vaults/yVault.sol
+++ b/contracts/vaults/yVault.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/contracts/vaults/yWETH.sol b/contracts/vaults/yWETH.sol
index b8bf4cf6..f721198c 100644
--- a/contracts/vaults/yWETH.sol
+++ b/contracts/vaults/yWETH.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 import "@openzeppelinV2/contracts/token/ERC20/IERC20.sol";
diff --git a/interfaces/aave/Aave.sol b/interfaces/aave/Aave.sol
index 6b1bc2ae..c6832b83 100644
--- a/interfaces/aave/Aave.sol
+++ b/interfaces/aave/Aave.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface Aave {
diff --git a/interfaces/aave/AaveToken.sol b/interfaces/aave/AaveToken.sol
index 4daf9847..874a2345 100644
--- a/interfaces/aave/AaveToken.sol
+++ b/interfaces/aave/AaveToken.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface AaveToken {
diff --git a/interfaces/aave/LendingPoolAddressesProvider.sol b/interfaces/aave/LendingPoolAddressesProvider.sol
index abbf4c12..e856f926 100644
--- a/interfaces/aave/LendingPoolAddressesProvider.sol
+++ b/interfaces/aave/LendingPoolAddressesProvider.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface LendingPoolAddressesProvider {
diff --git a/interfaces/aave/Oracle.sol b/interfaces/aave/Oracle.sol
index 80c3d646..0b34012b 100644
--- a/interfaces/aave/Oracle.sol
+++ b/interfaces/aave/Oracle.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface Oracle {
diff --git a/interfaces/compound/Token.sol b/interfaces/compound/Token.sol
index e3bc9c6d..f3e6c156 100644
--- a/interfaces/compound/Token.sol
+++ b/interfaces/compound/Token.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/cream/Controller.sol b/interfaces/cream/Controller.sol
index 1d2caab6..42ba2ae0 100644
--- a/interfaces/cream/Controller.sol
+++ b/interfaces/cream/Controller.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/curve/Curve.sol b/interfaces/curve/Curve.sol
index 8224da58..5974fe3e 100644
--- a/interfaces/curve/Curve.sol
+++ b/interfaces/curve/Curve.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/curve/Gauge.sol b/interfaces/curve/Gauge.sol
index 4fa93229..21b9e0b3 100644
--- a/interfaces/curve/Gauge.sol
+++ b/interfaces/curve/Gauge.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/curve/Mintr.sol b/interfaces/curve/Mintr.sol
index 78505268..8c605647 100644
--- a/interfaces/curve/Mintr.sol
+++ b/interfaces/curve/Mintr.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/curve/VoteEscrow.sol b/interfaces/curve/VoteEscrow.sol
index 2ebf77e4..72c1e8a7 100644
--- a/interfaces/curve/VoteEscrow.sol
+++ b/interfaces/curve/VoteEscrow.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/dforce/Rewards.sol b/interfaces/dforce/Rewards.sol
index 1c3bfbdb..0a600fc4 100644
--- a/interfaces/dforce/Rewards.sol
+++ b/interfaces/dforce/Rewards.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/dforce/Token.sol b/interfaces/dforce/Token.sol
index a7a2530e..87195d67 100644
--- a/interfaces/dforce/Token.sol
+++ b/interfaces/dforce/Token.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/maker/Maker.sol b/interfaces/maker/Maker.sol
index 10e29079..f22127b0 100644
--- a/interfaces/maker/Maker.sol
+++ b/interfaces/maker/Maker.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface GemLike {
diff --git a/interfaces/maker/OracleSecurityModule.sol b/interfaces/maker/OracleSecurityModule.sol
index e8b6c2cc..04cc51cc 100644
--- a/interfaces/maker/OracleSecurityModule.sol
+++ b/interfaces/maker/OracleSecurityModule.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface OracleSecurityModule {
diff --git a/interfaces/uniswap/Uni.sol b/interfaces/uniswap/Uni.sol
index f644d0a1..dd318be3 100644
--- a/interfaces/uniswap/Uni.sol
+++ b/interfaces/uniswap/Uni.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/weth/WETH.sol b/interfaces/weth/WETH.sol
index 4479cc9d..a2b6b823 100644
--- a/interfaces/weth/WETH.sol
+++ b/interfaces/weth/WETH.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface WETH {
diff --git a/interfaces/yearn/IController.sol b/interfaces/yearn/IController.sol
index 6f38e5aa..475997f8 100644
--- a/interfaces/yearn/IController.sol
+++ b/interfaces/yearn/IController.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IConverter.sol b/interfaces/yearn/IConverter.sol
index df07978e..c273d5cf 100644
--- a/interfaces/yearn/IConverter.sol
+++ b/interfaces/yearn/IConverter.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IDelegatedVault.sol b/interfaces/yearn/IDelegatedVault.sol
index 5d9bb440..2b0ccd37 100644
--- a/interfaces/yearn/IDelegatedVault.sol
+++ b/interfaces/yearn/IDelegatedVault.sol
@@ -1,3 +1,4 @@
+/// SPDX-License-Identifier: SSPL-1.0
 pragma solidity ^0.5.17;
 
 interface IDelegatedVault {
diff --git a/interfaces/yearn/IGovernance.sol b/interfaces/yearn/IGovernance.sol
index f0573cfc..23c1bf5b 100644
--- a/interfaces/yearn/IGovernance.sol
+++ b/interfaces/yearn/IGovernance.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IOneSplitAudit.sol b/interfaces/yearn/IOneSplitAudit.sol
index daffdd7e..c5528f47 100644
--- a/interfaces/yearn/IOneSplitAudit.sol
+++ b/interfaces/yearn/IOneSplitAudit.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IProxy.sol b/interfaces/yearn/IProxy.sol
index 5323916a..0e9bd7a6 100644
--- a/interfaces/yearn/IProxy.sol
+++ b/interfaces/yearn/IProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IStrategy.sol b/interfaces/yearn/IStrategy.sol
index 5b4924cb..45670167 100644
--- a/interfaces/yearn/IStrategy.sol
+++ b/interfaces/yearn/IStrategy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IToken.sol b/interfaces/yearn/IToken.sol
index c45ca62e..51c168be 100644
--- a/interfaces/yearn/IToken.sol
+++ b/interfaces/yearn/IToken.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IVault.sol b/interfaces/yearn/IVault.sol
index 8376d39b..78bc10db 100644
--- a/interfaces/yearn/IVault.sol
+++ b/interfaces/yearn/IVault.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IVoterProxy.sol b/interfaces/yearn/IVoterProxy.sol
index b51ee48a..a3ef5b4c 100644
--- a/interfaces/yearn/IVoterProxy.sol
+++ b/interfaces/yearn/IVoterProxy.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;
 
diff --git a/interfaces/yearn/IWrappedVault.sol b/interfaces/yearn/IWrappedVault.sol
index 3b7b1c67..37504ae1 100644
--- a/interfaces/yearn/IWrappedVault.sol
+++ b/interfaces/yearn/IWrappedVault.sol
@@ -1,4 +1,5 @@
-// SPDX-License-Identifier: MIT
+/// SPDX-License-Identifier: SSPL-1.0
+
 
 pragma solidity ^0.5.17;