diff --git a/README.md b/README.md
index fb7ac3453..ffed0b258 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,10 @@ building the library or including the function definitions:
 #define BOOST_JSON_STACK_BUFFER_SIZE 1024
 #include <boost/json/src.hpp>
 ```
+### Endianness
+
+Boost.JSON uses [Boost.Endian](https://www.boost.org/doc/libs/release/libs/endian/doc/html/endian.html)
+in order to support both little endian and big endian platforms.
 
 ### Supported Compilers
 
diff --git a/doc/qbk/overview.qbk b/doc/qbk/overview.qbk
index 9de3cd724..d4f564b8d 100644
--- a/doc/qbk/overview.qbk
+++ b/doc/qbk/overview.qbk
@@ -120,6 +120,12 @@ building the library or including the function definitions:
 #include <boost/json/src.hpp>
 ```
 
+[heading Endianness]
+
+Boost.JSON uses
+[@https://www.boost.org/doc/libs/release/libs/endian/doc/html/endian.html
+Boost.Endian] in order to support both little endian and big endian platforms.
+
 [heading Supported Compilers]
 
 Boost.JSON has been tested with the following compilers: