diff --git a/pkgs/by-name/ch/chez-racket/shared.nix b/pkgs/by-name/ch/chez-racket/shared.nix
index fc7b9f2f9051..a52d1ea11192 100644
--- a/pkgs/by-name/ch/chez-racket/shared.nix
+++ b/pkgs/by-name/ch/chez-racket/shared.nix
@@ -16,7 +16,7 @@ args:
 stdenv.mkDerivation (
   args
   // {
-    version = "unstable-2021-12-11";
+    version = "8.3-unstable-2021-12-11";
 
     src = fetchFromGitHub {
       owner = "racket";