diff --git a/pkgs/by-name/ec/ecwolf/package.nix b/pkgs/by-name/ec/ecwolf/package.nix
index dee16bc3d3b06..f8c3a8fe638a1 100644
--- a/pkgs/by-name/ec/ecwolf/package.nix
+++ b/pkgs/by-name/ec/ecwolf/package.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "ecwolf";
     repo = "ecwolf";
     rev = "refs/tags/${finalAttrs.version}";
-    sha256 = "V2pSP8i20zB50WtUMujzij+ISSupdQQ/oCYYrOaTU1g=";
+    hash = "sha256-V2pSP8i20zB50WtUMujzij+ISSupdQQ/oCYYrOaTU1g=";
   };
 
   patches = [