diff --git a/.github/workflows/win-cpn-32.yml b/.github/workflows/win-cpn-32.yml
index a84903fac..5a853ab77 100644
--- a/.github/workflows/win-cpn-32.yml
+++ b/.github/workflows/win-cpn-32.yml
@@ -65,10 +65,18 @@ jobs:
                                 mingw-w64-i686-clang \
                                 mingw-w64-i686-nsis
           pip install Pillow clang
-          
+
+      - name: Cache Qt
+        id: cache-qt
+        uses: actions/cache@v1  # not v2!
+        with:
+          path: ../Qt
+          key: win32-QtCache
+
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
+          cached: ${{ steps.cache-qt.outputs.cache-hit }}
           version: ${{ env.QT_VERSION }}
           arch: ${{ env.MINGW_VERSION }}
 
diff --git a/.github/workflows/win_cpn.yml b/.github/workflows/win_cpn.yml
index 7c579b3c0..68806737d 100644
--- a/.github/workflows/win_cpn.yml
+++ b/.github/workflows/win_cpn.yml
@@ -68,10 +68,18 @@ jobs:
                                 mingw-w64-x86_64-clang \
                                 mingw-w64-x86_64-nsis
           pip install Pillow clang
-          
+
+      - name: Cache Qt
+        id: cache-qt
+        uses: actions/cache@v1  # not v2!
+        with:
+          path: ../Qt
+          key: win64-QtCache
+
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
+          cached: ${{ steps.cache-qt.outputs.cache-hit }}
           version: ${{ env.QT_VERSION }}
           arch: ${{ env.MINGW_VERSION }}