diff --git a/yarn.lock b/yarn.lock
index 6ae25f9..50debe5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -688,7 +688,7 @@ depd@~1.1.0:
 
 deprecated@^0.0.1:
   version "0.0.1"
-  resolved "http://registry.npmjs.org/deprecated/-/deprecated-0.0.1.tgz#f9c9af5464afa1e7a971458a8bdef2aa94d5bb19"
+  resolved "https://registry.npmjs.org/deprecated/-/deprecated-0.0.1.tgz#f9c9af5464afa1e7a971458a8bdef2aa94d5bb19"
 
 destroy@~1.0.4:
   version "1.0.4"
@@ -871,9 +871,9 @@ eventemitter2@~0.4.13:
   version "0.4.14"
   resolved "https://registry.yarnpkg.com/eventemitter2/-/eventemitter2-0.4.14.tgz#8f61b75cde012b2e9eb284d4545583b5643b61ab"
 
-eventemitter3@1.x.x:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.2.0.tgz#1c86991d816ad1e504750e73874224ecf3bec508"
+eventemitter3@^4.0.0:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
 
 exec-buffer@^2.0.0:
   version "2.0.1"
@@ -1063,6 +1063,10 @@ fobject@0.x:
     semver "^5.1.0"
     when "^3.7.7"
 
+follow-redirects@^1.0.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+
 for-in@^0.1.5:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.6.tgz#c9f96e89bfad18a545af5ec3ed352a1d9e5b4dc8"
@@ -1103,7 +1107,7 @@ fresh@0.3.0:
 
 fs-exists-sync@^0.1.0:
   version "0.1.0"
-  resolved "http://registry.npmjs.org/fs-exists-sync/-/fs-exists-sync-0.1.0.tgz#982d6893af918e72d08dec9e8673ff2b5a8d6add"
+  resolved "https://registry.npmjs.org/fs-exists-sync/-/fs-exists-sync-0.1.0.tgz#982d6893af918e72d08dec9e8673ff2b5a8d6add"
 
 gaze@^0.5.1:
   version "0.5.2"
@@ -1207,7 +1211,7 @@ glob-watcher@^0.0.7:
 
 glob2base@^0.0.12:
   version "0.0.12"
-  resolved "http://registry.npmjs.org/glob2base/-/glob2base-0.0.12.tgz#9d419b3e28f12e83a362164a277055922c9c0d56"
+  resolved "https://registry.npmjs.org/glob2base/-/glob2base-0.0.12.tgz#9d419b3e28f12e83a362164a277055922c9c0d56"
   dependencies:
     find-index "^0.1.1"
 
@@ -1556,11 +1560,12 @@ http-errors@~1.5.0, http-errors@~1.5.1:
     statuses ">= 1.3.1 < 2"
 
 http-proxy@^1.7.3:
-  version "1.16.2"
-  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.16.2.tgz#06dff292952bf64dbe8471fa9df73066d4f37742"
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
   dependencies:
-    eventemitter3 "1.x.x"
-    requires-port "1.x.x"
+    eventemitter3 "^4.0.0"
+    follow-redirects "^1.0.0"
+    requires-port "^1.0.0"
 
 http-signature@~1.1.0:
   version "1.1.1"
@@ -1802,7 +1807,7 @@ is-png@^1.0.0:
 
 is-posix-bracket@^0.1.0:
   version "0.1.1"
-  resolved "http://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
+  resolved "https://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
 
 is-primitive@^2.0.0:
   version "2.0.0"
@@ -2822,7 +2827,7 @@ request@2.78.0:
     tough-cookie "~2.3.0"
     tunnel-agent "~0.4.1"
 
-requires-port@1.x.x:
+requires-port@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
 
@@ -3313,7 +3318,7 @@ ultron@1.0.x:
 
 unc-path-regex@^0.1.0:
   version "0.1.2"
-  resolved "http://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz#e73dd3d7b0d7c5ed86fbac6b0ae7d8c6a69d50fa"
+  resolved "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz#e73dd3d7b0d7c5ed86fbac6b0ae7d8c6a69d50fa"
 
 underscore.string@~2.2.1:
   version "2.2.1"