diff --git a/pkgs/by-name/to/tome4/package.nix b/pkgs/by-name/to/tome4/package.nix
index 777ee07186e4..82691a86a2ad 100644
--- a/pkgs/by-name/to/tome4/package.nix
+++ b/pkgs/by-name/to/tome4/package.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   src = fetchurl {
     url = "https://te4.org/dl/t-engine/t-engine4-src-${finalAttrs.version}.tar.bz2";
-    sha256 = "sha256-mJ3qAIA/jNyt4CT0ZH1IC7GsDUN8JUKSwHVJwnKkaAw=";
+    hash = "sha256-mJ3qAIA/jNyt4CT0ZH1IC7GsDUN8JUKSwHVJwnKkaAw=";
   };
 
   prePatch = ''