diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.21.1 (Jul 17, 2023)
+
+BUG FIXES:
+- Fix cannot create a k8s cluster with a version not supporting `rocket_storage` [PR #239](https://github.com/gridscale/terraform-provider-gridscale/pull/239).
+
 ## 1.21.0 (Jul 11, 2023)
 
 FEATURES: