diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml
index a0e7e178d..46fb9e5fc 100644
--- a/.github/workflows/mkdocs.yml
+++ b/.github/workflows/mkdocs.yml
@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
 
       - uses: actions/setup-python@v2.1.4
         with: