diff --git a/.github/workflows/VS2019.yml b/.github/workflows/VS2019.yml
index 55be476..d7320ef 100644
--- a/.github/workflows/VS2019.yml
+++ b/.github/workflows/VS2019.yml
@@ -21,3 +21,7 @@ jobs:
     - name: test
       shell: cmd
       run: D:\a\mstoolkit\mstoolkit\VisualStudio\x64\Release\MSSingleScan.exe
+
+    - name: test DLL
+      shell: cmd
+      run: D:\a\mstoolkit\mstoolkit\VisualStudio\x64\Release\DLL\MSSingleScan.exe
\ No newline at end of file