diff --git a/docs/release.rst b/docs/release.rst
index e8ee1204..fcd3422f 100644
--- a/docs/release.rst
+++ b/docs/release.rst
@@ -17,6 +17,16 @@ Release notes
 Unreleased
 ----------
 
+.. _release_0.16.5:
+
+0.16.5
+------
+
+Fixes
+~~~~~
+
+* Restore prior optional dependency behavior for `'crc32c'` group.
+  By :user:`Davis Bennett <d-v-b>`, :issue:`802`
 
 .. _release_0.16.4: