diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index 0e65c8827..f86b952fb 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -171,6 +171,7 @@ jobs:
           python preprocess.py -arp -d ../../rustdesk
           nuget restore msi.sln
           msbuild msi.sln -p:Configuration=Release -p:Platform=x64 /p:TargetVersion=Windows10
+          mkdir -p ../../SignOutput
           mv ./Package/bin/x64/Release/en-us/Package.msi ../../SignOutput/rustdesk-${{ env.VERSION }}-${{ matrix.job.arch }}-beta.msi
           sha256sum ../../SignOutput/rustdesk-*.msi