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diff --git a/CHANGES b/CHANGES
index 259bb29..cbf4c47 100644
--- a/CHANGES
+++ b/CHANGES
@@ -6,6 +6,8 @@ This file lists the changes in each six version.
 Development version
 -------------------
 
+- Issue #122: Improve the performance of `six.int2byte` on Python 3.
+
 - Pull request #55 and issue #99: Don't add the `winreg` module to `six.moves`
   on non-Windows platforms.