diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fe28a50..2107ed3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,8 +8,8 @@ on:
 
 jobs:
   build:
-    # both Windows and Linux builds run on Ubuntu
-    runs-on: ${{ matrix.build == 'macos' && 'macos' || 'ubuntu' }}-latest
+    # Use Windows runner for Windows builds, Ubuntu for Linux builds, and macOS for macOS builds
+    runs-on: ${{ matrix.build == 'windows' && 'windows' || matrix.build == 'macos' && 'macos' || 'ubuntu' }}-latest
     strategy:
       fail-fast: false
       matrix:
@@ -41,6 +41,7 @@ jobs:
         uses: ilammy/msvc-dev-cmd@v1
 
       - name: Build GDExtension library
+        shell: bash
         run: |
           cd cusf_launcher_crypto
           mkdir -p ../cusf_launcher/addons/cusf_launcher_crypto/bin