diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 7b2d53c0..f9106880 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -54,7 +54,7 @@ jobs:
       if: matrix.extras == 'all'
       uses: r-lib/actions/setup-r@v2
       with:
-        r-version: 'release'
+        r-version: '3.6.3'
 #    - name: install lme4
 #      if: matrix.extras == 'all'
 #      uses: r-lib/actions/setup-r-dependencies@v2