diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 7526188c4f..10ca80ccab 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -22,6 +22,7 @@ Changelog
 ~~~~~~~~~~~~~~~~~~~
 
  * Fix: Ensure comment notification checkbox is fully hidden when commenting is disabled (Karl Hobley)
+ * Fix: Prevent commenting from failing for user models with UUID primary keys (Jacob Topp-Mugglestone)
 
 
 2.13 (12.05.2021)
diff --git a/docs/releases/2.13.1.rst b/docs/releases/2.13.1.rst
index 5ff99af600..4b0e74a850 100644
--- a/docs/releases/2.13.1.rst
+++ b/docs/releases/2.13.1.rst
@@ -14,3 +14,4 @@ Bug fixes
 ~~~~~~~~~
 
  * Ensure comment notification checkbox is fully hidden when commenting is disabled (Karl Hobley)
+ * Prevent commenting from failing for user models with UUID primary keys (Jacob Topp-Mugglestone)