From 148f7f700228761b077d2d5bcd5f8dcf829b4ee6 Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Thu, 23 Apr 2026 13:38:51 +0000
Subject: [PATCH] mdbook

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

diff --git a/action.yml b/action.yml
index 95ecee99..71c54591 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
   checksum:
     description: Whether to enable checksums (strongly discouraged to disable)
     required: false