diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3568d5f47..4fd402d1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## Unreleased
 
-## 1.21.0-rc.0 / 2025-01-21
+## 1.21.0 / 2025-02-17
 
 :warning: This release contains potential breaking change if you upgrade `github.com/prometheus/common` to 0.62+ together with client_golang. :warning:
 
diff --git a/VERSION b/VERSION
index e02d83fc5..3500250a4 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.21.0-rc.0
+1.21.0