diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
index 93f80c3..ee2a79e 100644
--- a/.github/workflows/build_docs.yml
+++ b/.github/workflows/build_docs.yml
@@ -24,7 +24,7 @@ jobs:
           python-version: 3.9
           
       - name: Setup R
-        uses: r-lib/actions/setup-r@master
+        uses: r-lib/actions/setup-r@v2
         with:
             r-version: '3.6.2'