diff --git a/os/desktop/default.nix b/os/desktop/default.nix
index c873a55..9ddf56d 100644
--- a/os/desktop/default.nix
+++ b/os/desktop/default.nix
@@ -41,9 +41,11 @@
             languages = [ "fr" ];
             symbolsFile = "${pkgs.stdenv.mkDerivation {
               name = "qwerty-fr-keypad";
-              src = builtins.fetchGit {
-                url = "https://github.com/qwerty-fr/qwerty-fr.git";
+              src = pkgs.fetchFromGitHub {
+                owner = "qwerty-fr";
+                repo = "qwerty-fr";
                 rev = "3a4d13089e8ef016aa20baf6b2bf3ea53de674b8";
+                sha256 = "sha256-wn5n6jJVDrQWJze8xYF2nEY8a7mHI3hVO4xsT4LMo9c=";
               };
               patches = [ ./qwerty-fr-keypad.diff ];
               # TODO This doesn't seem to be applied... it's the whole point of the derivation :(