diff --git a/.github/workflows/R-CMD-check-hard.yaml b/.github/workflows/R-CMD-check-hard.yaml
index c978cbd4..57e9b306 100644
--- a/.github/workflows/R-CMD-check-hard.yaml
+++ b/.github/workflows/R-CMD-check-hard.yaml
@@ -47,7 +47,7 @@ jobs:
           cache: false
           extra-packages: |
             any::rcmdcheck
-            r-lib::testthat
+            github::r-lib/testthat
             any::knitr
             any::rmarkdown
           needs: check