diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 27a983ae2..21a6cb165 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,17 +91,6 @@ jobs:
         uses: snok/install-poetry@v1
         with:
           installer-parallel: true
-      - name: build lock
-        run: | 
-          cd ./src/backend
-          pip install bisheng_langchain==$RELEASE_VERSION
-          poetry lock
-          # 安装 nltk
-          pip install nltk
-          python -c "import nltk; nltk.download('punkt'); nltk.download('punkt_tab'); nltk.download('averaged_perceptron_tagger'); nltk.download('averaged_perceptron_tagger_eng'); "
-          mv /home/runner/nltk_data ./
-          cd ../../
-
       - name: Build backend and push
         id: docker_build_backend
         uses: docker/build-push-action@v2