diff --git a/jobsets.nix b/jobsets.nix
index a06b9f1..34ec18d 100644
--- a/jobsets.nix
+++ b/jobsets.nix
@@ -82,6 +82,7 @@ let
       nixexprpath = "ticker.nix";
       gitUrls = {
         ticker = "https://gitea.c3d2.de/astro/ticker.git master 1";
+        mozillaOverlay = "https://github.com/mozilla/nixpkgs-mozilla.git master 1";
       };
     };