diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f1048a42..3bad0289 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,6 +51,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
+          pip install GitPython
       - run: python .github/check-chinese-character.py
 
   unit-tests-java: