diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 8dfa074..32c78da 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -12,6 +12,7 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
+  workflow_dispatch:
 
 jobs:
   test: