From 95ba317d5dd86bca2266d5475b3a78fd9fcdd4fc Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Sat, 12 Sep 2026 11:43:19 +0000
Subject: [PATCH] mdbook-mermaid

---
 action.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/action.yml b/action.yml
index ab6888d0..7244312d 100644
--- a/action.yml
+++ b/action.yml
@@ -4,8 +4,8 @@ description: GitHub Action for installing development tools
 inputs:
   tool:
     description: Tools to install (whitespace or comma separated list)
-    required: true
-    # default: #publish:tool
+    required: false
+    default: mdbook-mermaid
   checksum:
     description: Whether to enable checksums (strongly discouraged to disable)
     required: false