diff --git a/ChangeLog b/ChangeLog
index 3d61dd55a..71ba44deb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,6 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
-= mbed TLS x.x.x branch released xxxx-xx-xx
+= mbed TLS 3.1.0 branch released 2021-12-17
 
 API changes
    * New error code for GCM: MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL.
@@ -47,7 +47,7 @@ Features
      Currently only 13-byte long IV's are supported.
      For decryption a minimum of 16-byte long input is expected.
      These restrictions may be subject to change.
-    * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
+   * Add new API mbedtls_ct_memcmp for constant time buffer comparison.
    * Add functions to get the IV and block size from cipher_info structs.
    * Add functions to check if a cipher supports variable IV or key size.
    * Add the internal implementation of and support for CCM to the PSA multipart
@@ -130,8 +130,8 @@ Bugfix
      these two.
    * Fix issue in Makefile on Linux with SHARED=1, that caused shared libraries
      not to list other shared libraries they need.
-   * Fix a bug in mbedtls_gcm_starts() when bits of iv are longer than 2^32.
-     Fixes #4884.
+   * Fix a bug in mbedtls_gcm_starts() when the bit length of the iv
+     exceeds 2^32. Fixes #4884.
    * Fix an uninitialized variable warning in test_suite_ssl.function with GCC
      version 11.
    * Fix the build when no SHA2 module is included. Fixes #4930.
@@ -169,15 +169,15 @@ Changes
      length will be ignored.
    * Indicate in the error returned if the nonce length used with
      ChaCha20-Poly1305 is invalid, and not just unsupported.
-    * The mbedcrypto library includes a new source code module constant_time.c,
-      containing various functions meant to resist timing side channel attacks.
-      This module does not have a separate configuration option, and functions
-      from this module will be included in the build as required. Currently
-      most of the interface of this module is private and may change at any
-      time.
-    * The generated configuration-independent files are now automatically
-      generated by the CMake build system on Unix-like systems. This is not
-      yet supported when cross-compiling.
+   * The mbedcrypto library includes a new source code module constant_time.c,
+     containing various functions meant to resist timing side channel attacks.
+     This module does not have a separate configuration option, and functions
+     from this module will be included in the build as required. Currently
+     most of the interface of this module is private and may change at any
+     time.
+   * The generated configuration-independent files are now automatically
+     generated by the CMake build system on Unix-like systems. This is not
+     yet supported when cross-compiling.
 
 = Mbed TLS 3.0.0 branch released 2021-07-07