diff --git a/nix/modules/knot.nix b/nix/modules/knot.nix
--- a/nix/modules/knot.nix
+++ b/nix/modules/knot.nix
@@ -194,6 +194,8 @@ name = Git User
               email = git@example.com
           [receive]
               advertisePushOptions = true
+          [uploadpack]
+              allowFilter = true
           EOF
           ${setMotd}
           chown -R ${cfg.gitUser}:${cfg.gitUser} "${cfg.stateDir}"