diff --git a/CHANGES.rst b/CHANGES.rst
index cd5dc19d847..2e30443b567 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,6 +10,26 @@
 
 .. towncrier release notes start
 
+3.13.5 (2026-03-31)
+===================
+
+Bug fixes
+---------
+
+- Skipped the duplicate singleton header check in lax mode (the default for response
+  parsing). In strict mode (request parsing, or ``-X dev``), all RFC 9110 singletons
+  are still enforced -- by :user:`bdraco`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`12302`.
+
+
+
+
+----
+
+
 3.13.4 (2026-03-28)
 ===================
 
diff --git a/CHANGES/12302.bugfix.rst b/CHANGES/12302.bugfix.rst
deleted file mode 100644
index fe9e8fbd624..00000000000
--- a/CHANGES/12302.bugfix.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Skipped the duplicate singleton header check in lax mode (the default for response
-parsing). In strict mode (request parsing, or ``-X dev``), all RFC 9110 singletons
-are still enforced -- by :user:`bdraco`.