diff --git a/.github/workflows/update-readthedocs.yml b/.github/workflows/update-readthedocs.yml
index 2b57fe9b..a706b8ab 100644
--- a/.github/workflows/update-readthedocs.yml
+++ b/.github/workflows/update-readthedocs.yml
@@ -20,6 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
+      - uses: actions/checkout@v3
+
       - name: Update wiki submodule
         id: update
         run: |