diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 57646f7bd2..a0a8999aab 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -117,6 +117,7 @@ test:build:backend_ts_only:
     - apt-get install -y --no-install-recommends build-essential python3 nodejs postgresql-client
     - corepack enable
     - corepack prepare pnpm@latest --activate
+    - cp .config/ci.yml .config/default.yml
     - export PGPASSWORD="${POSTGRES_PASSWORD}"
     - psql --host postgres --user "${POSTGRES_USER}" --dbname "${POSTGRES_DB}" --command 'CREATE EXTENSION pgroonga'
   script: