diff --git a/.github/workflows/windows-msys.yml b/.github/workflows/windows-msys.yml
index c74be9c..5a0f725 100644
--- a/.github/workflows/windows-msys.yml
+++ b/.github/workflows/windows-msys.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: windows-latest
     defaults:
       run:
-        shell: mingw64 {0}
+        shell: msys2 {0}
     strategy:
       max-parallel: 10
       fail-fast: false
@@ -26,6 +26,7 @@ jobs:
     - uses: msys2/setup-msys2@v2
       with:
         update: true
+        msystem: mingw64
         install: >-
           ccache
           clang