diff --git a/.github/workflows/ffmpeg.yml b/.github/workflows/ffmpeg.yml
index d41c4cc..9ed1bb7 100644
--- a/.github/workflows/ffmpeg.yml
+++ b/.github/workflows/ffmpeg.yml
@@ -23,6 +23,9 @@ jobs:
         uses: microsoft/setup-msbuild@v1.1
         with:
           msbuild-architecture: x64
+      - name: Set up development tools
+        shell: cmd {0}
+        run: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat
       - name: Set up cache
         uses: actions/cache@v2
         env: