diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index ef4e5ac56..87cea3344 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - master
+  # Actions タブから手動でワークフローを実行できるようにします
+  workflow_dispatch:
 
 jobs:
   build: