diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4ab3999..4ec300b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
         with:
           access_token: ${{ github.token }}
           
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0 # avoid shallow clone so nbgv can do its work.