diff --git a/backend/internal/runtime/service_e2e_test.go b/backend/internal/runtime/service_e2e_test.go
index c045b2b..78362c6 100644
--- a/backend/internal/runtime/service_e2e_test.go
+++ b/backend/internal/runtime/service_e2e_test.go
@@ -200,6 +200,8 @@ func TestServiceStartGameEndToEnd(t *testing.T) {
 	engineSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		switch r.URL.Path {
+		case "/healthz":
+			w.WriteHeader(http.StatusOK)
 		case "/api/v1/admin/init":
 			_ = json.NewEncoder(w).Encode(rest.StateResponse{ID: gameID, Turn: 0, Players: []rest.PlayerState{{RaceName: "Alpha", Planets: 3, Population: 10}}})
 		case "/api/v1/admin/status":