diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f108bd926..d1b86f53a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
       - uses: olafurpg/setup-scala@v11
       - run: sbt '++2.12.13 docs/mdoc'
   test-windows: