diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index c5eb662..d3fe746 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -25,7 +25,9 @@ jobs:
           key: cpm-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: configure
-        run: cmake -Stest -Bbuild -DCPM_SOURCE_CACHE=$(pwd)/cpm_modules
+        run: |
+          mkdir -p cpm_modules
+          cmake -Stest -Bbuild -DCPM_SOURCE_CACHE=$(pwd)/cpm_modules
 
       - name: build
         run: cmake --build build --config Debug -j4