diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bfed8ca..6baf865 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+  workflow_dispatch: # manual run
 
 jobs:
   github-pages: