diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 57039db..cdafaa5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -42,7 +42,7 @@ jobs:
       - name: Install dependencies plugin
         run: yarn --frozen-lockfile --unsafe-perm
       - name: Install dependencies playground
-        run: yarn playground:install --unsafe-perm
+        run: yarn playground:install --frozen-lockfile --unsafe-perm
       - name: Run test
         run: yarn run -s test:integration
       - name: Upload coverage to Codecov
diff --git a/server/config.js b/server/config.js
index ceac666..91fa02f 100644
--- a/server/config.js
+++ b/server/config.js
@@ -5,7 +5,7 @@ module.exports = {
     syncDir: "config/sync/",
     minify: false,
     importOnBootstrap: false,
-    customTypes: [{}],
+    customTypes: [],
     excludedTypes: [],
     excludedConfig: [
       "core-store.plugin_users-permissions_grant",