diff --git a/.github/workflows/ghc-lib-ghc-master-ghc-9.10.1.yml b/.github/workflows/ghc-lib-ghc-master-ghc-9.10.1.yml
index 7c0a4158..60dc825a 100644
--- a/.github/workflows/ghc-lib-ghc-master-ghc-9.10.1.yml
+++ b/.github/workflows/ghc-lib-ghc-master-ghc-9.10.1.yml
@@ -48,11 +48,12 @@ jobs:
           cabal --store-dir=$HOME/.cabal/store --lib --force-reinstalls --package-env=- install extra-1.7.16 optparse-applicative-0.18.1.0
         if: matrix.os == 'ubuntu' || matrix.os == 'macos'
       - name: Run CI.hs (windows)
-        shell: bash
+        shell: $GHCUP_MSYS2/usr/bin/bash --noprofile --no-rc -e -o pipefail
         run: |-
           PATH=/c/cabal/bin:/c/ghcup/ghc/9.10.1/bin:/c/ghcup/bin:"$GHCUP_MSYS2"/usr/bin:/c/mingw64/bin:"/c/program files/git/bin":"$PATH"
           export PATH
-          $GHCUP_MSYS2/usr/bin/bash --noprofile --norc -e -o pipefail -c "set -x && pacman -S autoconf automake-wrapper make patch python tar mintty --noconfirm &&  runghc --ghc-arg=-clear-package-db --ghc-arg=-global-package-db --ghc-arg=-user-package-db --ghc-arg=-package-db --ghc-arg=/c/cabal/store/$(ls /c/cabal/store)/package.db CI.hs --ghc-flavor ghc-master"
+          pacman -S autoconf automake-wrapper make patch python tar mintty --noconfirm
+          runghc --ghc-arg=-clear-package-db --ghc-arg=-global-package-db --ghc-arg=-user-package-db --ghc-arg=-package-db --ghc-arg=/c/cabal/store/$(ls /c/cabal/store)/package.db CI.hs --ghc-flavor ghc-master
         if: matrix.os == 'windows'
       - name: Run CI.hs (unix)
         shell: bash