diff --git a/pkgs/by-name/de/decoder/package.nix b/pkgs/by-name/de/decoder/package.nix
index b6e553758f42..1806614ebc2b 100644
--- a/pkgs/by-name/de/decoder/package.nix
+++ b/pkgs/by-name/de/decoder/package.nix
@@ -8,13 +8,13 @@
 
 stdenv.mkDerivation {
   pname = "decoder";
-  version = "unstable-2021-11-20";
+  version = "0.4-unstable-2021-11-19";
 
   src = fetchFromGitHub {
     owner = "PeterPawn";
     repo = "decoder";
     rev = "da0f826629d4e7b873f9d1a39f24c50ff0a68cd2";
-    sha256 = "sha256-1sT1/iwtc2ievmLuNuooy9b14pTs1ZC5noDwzFelk7w=";
+    hash = "sha256-1sT1/iwtc2ievmLuNuooy9b14pTs1ZC5noDwzFelk7w=";
   };
 
   patches = [