diff --git a/nixos/tests/installed-tests/gjs.nix b/nixos/tests/installed-tests/gjs.nix
index 1656e9de171b..d12487cba249 100644
--- a/nixos/tests/installed-tests/gjs.nix
+++ b/nixos/tests/installed-tests/gjs.nix
@@ -3,4 +3,10 @@
 makeInstalledTest {
   tested = pkgs.gjs;
   withX11 = true;
+
+  testConfig = {
+    environment.systemPackages = [
+      pkgs.gjs
+    ];
+  };
 }