diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 42661b09..574c9c3e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,7 @@ jobs:
           - os: windows-2022
             qt_version: 5.15.2
             qt_host: windows
-            qt_arch: win64_mingw81
+            qt_arch: win32_mingw81
 
           - os: macos-11
             qt_version: 5.12.12
@@ -37,6 +37,16 @@ jobs:
       BUILD_DIR: "build"
 
     steps:
+      - name: Install 32bit mingw on Windows
+        if: runner.os == 'Windows'
+        uses: egor-tensin/setup-mingw@v2
+        with:
+          platform: x86
+
+      - name: Install 32bit zlib via Strawberry on Windows
+        if: runner.os == 'Windows'
+        run: |
+          choco install strawberryperl -y --force --x86
 
       - name: Checkout
         uses: actions/checkout@v2
@@ -53,7 +63,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: "${{ github.workspace }}/Qt/"
-          key: ${{ runner.os }}-${{ matrix.qt_version }}-qt_cache
+          key: ${{ runner.os }}-${{ matrix.qt_version }}-${{ matrix.qt_arch }}-qt_cache
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
@@ -136,9 +146,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python -m pip install aqtinstall==2.0.5
-          python -m aqt install-tool -O "${{ github.workspace }}\Qt\" windows desktop tools_openssl_x64
-          copy "${{ github.workspace }}\Qt\Tools\OpenSSL\Win_x64\bin\libssl-1_1-x64.dll" "${{ github.workspace }}\${{ env.INSTALL_DIR }}\"
-          copy "${{ github.workspace }}\Qt\Tools\OpenSSL\Win_x64\bin\libcrypto-1_1-x64.dll" "${{ github.workspace }}\${{ env.INSTALL_DIR }}\"
+          python -m aqt install-tool -O "${{ github.workspace }}\Qt\" windows desktop tools_openssl_x86
+          copy "${{ github.workspace }}\Qt\Tools\OpenSSL\Win_x86\bin\libssl-1_1.dll" "${{ github.workspace }}\${{ env.INSTALL_DIR }}\"
+          copy "${{ github.workspace }}\Qt\Tools\OpenSSL\Win_x86\bin\libcrypto-1_1.dll" "${{ github.workspace }}\${{ env.INSTALL_DIR }}\"
 
       - name: Run macdeployqt
         if: runner.os == 'macOS'