diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 2d58e3208..0a231d1e4 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -36,6 +36,7 @@ jobs:
       - if: ${{ steps.cache-pip.outputs.cache-hit != 'true' }}
         name: Install dependencies
         run: |
+          python -m pip install -U pip
           python -m pip install -e plugins/hanlp_trie
           python -m pip install -e plugins/hanlp_common
           python -m pip install -e .