diff --git a/CHANGES.markdown b/CHANGES.markdown
index 280914c..240d9f7 100644
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,9 @@
+0.3.0.4 (19 Dec 2024)
+---------------------
+
+- Allow `base-4.21` and test on GHC 9.12
+- Fix warnings
+
 0.3.0.3 (10 July 2023)
 ---------------------