diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d7ea72..a48afa6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v5.12.0 (2025-12-27)
+
+### Feat
+
+- Add PKCE support (RFC 7636) (#670)
+
 ## v5.11.0 (2025-12-27)
 
 ### Feat