diff --git a/test.sh b/test.sh
index 3aba908..b4e1d73 100755
--- a/test.sh
+++ b/test.sh
@@ -5,5 +5,5 @@ cd "$(dirname "$0")"
 # On NixOS, run the VM tests to test runtime behaviour
 if command -v nixos-rebuild &> /dev/null; then
   # service tests
-  nix flake check -L ./test
+  nix flake check -L ./test --override-input services-flake .
 fi