diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index ef58fd5..d70e8b0 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -36,7 +36,7 @@ jobs:
         config:
           # - {os: macOS-latest,   r: 'devel'}
           # - {os: macOS-latest,   r: 'release'}
-          - {os: windows-latest, r: 'devel', rtools: '44'}
+          - {os: windows-latest, r: 'devel', rtools: '44', http-user-agent: 'release'}
           - {os: windows-latest, r: 'release', rtools: '43'}
           - {os: windows-latest, r: 'oldrel', rtools: '42'}
           # - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
@@ -46,7 +46,9 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
-      RTOOLS43_HOME: C:\rtools${{ matrix.config.rtools }}
+      RTOOLS42_HOME: C:\rtools42
+      RTOOLS43_HOME: C:\rtools43
+      RTOOLS44_HOME: C:\rtools44
 
     steps:
       - name: Configure git
@@ -73,7 +75,7 @@ jobs:
         run: |
           pacman -Sy --noconfirm
           pacman -S --noconfirm mingw-w64-{i686,x86_64}-gsl
-        shell: C:\rtools${{ matrix.config.rtools }}\usr\bin\bash.EXE --noprofile --norc -e -o pipefail {0}
+        shell: bash
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with: