diff --git a/.github/workflows/R-CMD-as-cran-check.yaml b/.github/workflows/R-CMD-as-cran-check.yaml
index a3881bc64..6707fa6fd 100644
--- a/.github/workflows/R-CMD-as-cran-check.yaml
+++ b/.github/workflows/R-CMD-as-cran-check.yaml
@@ -38,6 +38,7 @@ jobs:
         with:
           dependencies: NA
           extra-packages: |
+            rcmdcheck
             stan-dev/cmdstanr
             testthat
 
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index d2e42d93f..f00cbc72a 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -60,6 +60,7 @@ jobs:
         with:
           dependencies: NA
           extra-packages: |
+            rcmdcheck
             stan-dev/cmdstanr
             testthat