diff --git a/CHANGES.txt b/CHANGES.txt
index 98cdf2091c..cf6a74db8f 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,8 @@
+2022-12-07 version 21.11 (C++/Java/Python/PHP/Objective-C/C#/Ruby)
+  Python
+  * Add license file to pypi wheels (#10936)
+  * Fix round-trip bug (#10158)
+
 2022-11-29 version 21.10 (C++/Java/Python/PHP/Objective-C/C#/Ruby)
 
   Java
diff --git a/version.json b/version.json
index e76162bb20..d134b24033 100644
--- a/version.json
+++ b/version.json
@@ -1,17 +1,17 @@
 {
     "21.x": {
-        "protoc_version": "21.11",
+        "protoc_version": "21.12-dev",
         "lts": false,
-        "date": "2022-12-07",
+        "date": "2022-12-08",
         "languages": {
-            "cpp": "3.21.11",
-            "csharp": "3.21.11",
-            "java": "3.21.11",
-            "javascript": "3.21.11",
-            "objectivec": "3.21.11",
-            "php": "3.21.11",
-            "python": "4.21.11",
-            "ruby": "3.21.11"
+            "cpp": "3.21.12-dev",
+            "csharp": "3.21.12-dev",
+            "java": "3.21.12-dev",
+            "javascript": "3.21.12-dev",
+            "objectivec": "3.21.12-dev",
+            "php": "3.21.12-dev",
+            "python": "4.21.12-dev",
+            "ruby": "3.21.12-dev"
         }
     }
 }
\ No newline at end of file