diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index ca7d79ba..bb680846 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -41,6 +41,7 @@ jobs:
 
       - name: 生成API markdown
         run: |-
+          python -m pip install pydantic
           python liteyuki/mkdoc.py