diff --git a/.version b/.version
index 835ab5d1893f..b9b543d4254d 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-21.11
\ No newline at end of file
+21.05
diff --git a/lib/trivial.nix b/lib/trivial.nix
index e1581f1e91d6..f6f5da5998ff 100644
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@@ -171,7 +171,7 @@ rec {
      On each release the first letter is bumped and a new animal is chosen
      starting with that new letter.
   */
-  codeName = "Porcupine";
+  codeName = "Okapi";
 
   /* Returns the current nixpkgs version suffix as string. */
   versionSuffix =