diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b37f858..7b26faa 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,6 +11,8 @@
     steps:
       - name: Checkout master
         uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@1.16