diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22b827e96c62..0291007eef6a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+<a name="21.0.0-rc.0"></a>
+
+# 21.0.0-rc.0 (2025-10-30)
+
+<!-- CHANGELOG SPLIT MARKER -->
+
 <a name="21.0.0-next.10"></a>
 
 # 21.0.0-next.10 (2025-10-29)
diff --git a/package.json b/package.json
index 667c50b3c61a..6445cdf508c8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@angular/devkit-repo",
-  "version": "21.0.0-next.10",
+  "version": "21.0.0-rc.0",
   "private": true,
   "description": "Software Development Kit for Angular",
   "keywords": [