diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 24a90ca0b..02c9c4e6c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,7 @@
 name: build
 
 on:
+  workflow_dispatch:
   pull_request:
     branches:
       - master