diff --git a/pkgs/by-name/fa/fastfetch/package.nix b/pkgs/by-name/fa/fastfetch/package.nix
index d23690f03995..5df30d1c4c39 100644
--- a/pkgs/by-name/fa/fastfetch/package.nix
+++ b/pkgs/by-name/fa/fastfetch/package.nix
@@ -245,7 +245,7 @@ stdenv.mkDerivation (finalAttrs: {
     ];
 
   postPatch = ''
-    substituteInPlace completions/fastfetch.fish --replace-fail python3 '${python3.interpreter}'
+    substituteInPlace completions/fastfetch.{bash,fish,zsh} --replace-fail python3 '${python3.interpreter}'
   '';
 
   postInstall =