diff --git a/.github/workflows/main-04-R-CMD-check-windows.yml b/.github/workflows/main-04-R-CMD-check-windows.yml
index 10a65209..8e0637db 100644
--- a/.github/workflows/main-04-R-CMD-check-windows.yml
+++ b/.github/workflows/main-04-R-CMD-check-windows.yml
@@ -40,6 +40,7 @@ jobs:
           ./.github/scripts/decrypt_secret.sh
         env:
           SALESFORCER_TOKEN_PASSPHRASE: ${{ secrets.SALESFORCER_TOKEN_PASSPHRASE }}
+        shell: bash
       
       - uses: r-lib/actions/setup-r@master
         with: