diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 2efe74018..68752099c 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -59,7 +59,7 @@ jobs:
       - name: Install cmdstan
         uses: epinowcast/actions/install-cmdstan@v1
         with:
-          cmdstan-version: 'latest'
+          cmdstan-version: '2.35.0'
           num-cores: 2
 
       - uses: r-lib/actions/check-r-package@v2