diff --git a/CHANGES.md b/CHANGES.md
index 434f80980a5..9e13ef438cb 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,6 @@
 # Change Log
 
-## Unreleased
+## 21.12b0
 
 ### _Black_
 
diff --git a/docs/integrations/source_version_control.md b/docs/integrations/source_version_control.md
index 2149027218d..9c53f30687d 100644
--- a/docs/integrations/source_version_control.md
+++ b/docs/integrations/source_version_control.md
@@ -7,7 +7,7 @@ Use [pre-commit](https://pre-commit.com/). Once you
 ```yaml
 repos:
   - repo: https://github.com/psf/black
-    rev: 21.11b1
+    rev: 21.12b0
     hooks:
       - id: black
         # It is recommended to specify the latest version of Python
diff --git a/docs/usage_and_configuration/the_basics.md b/docs/usage_and_configuration/the_basics.md
index 3dc26b7013f..d002ff0173a 100644
--- a/docs/usage_and_configuration/the_basics.md
+++ b/docs/usage_and_configuration/the_basics.md
@@ -173,7 +173,7 @@ You can check the version of _Black_ you have installed using the `--version` fl
 
 ```console
 $ black --version
-black, version 21.11b1
+black, version 21.12b0
 ```
 
 An option to require a specific version to be running is also provided.