diff --git a/.github/workflows/msbuild48.yml b/.github/workflows/msbuild48.yml
index 2b96fe0a0f..94fdff7867 100644
--- a/.github/workflows/msbuild48.yml
+++ b/.github/workflows/msbuild48.yml
@@ -5,6 +5,7 @@ on:
     branches: [ "master" ]
     paths:
       - '**cs'
+  workflow_dispatch:
 
 jobs:
   build: