https://git.ruby-lang.org/ruby.git/commit/?id=5a4d9f91c4

From 5a4d9f91c4678a4b821fc9cc3be77058b1235bf9 Mon Sep 17 00:00:00 2001
From: yui-knk <spiketeika@g...>
Date: Thu, 10 Nov 2022 08:06:18 +0900
Subject: Update required Bison version in building_ruby.md [ci skip]

See [Feature #19068] for the context.
---
 doc/contributing/building_ruby.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/contributing/building_ruby.md b/doc/contributing/building_ruby.md
index 322ffbb064..33ed732a2b 100644
--- a/doc/contributing/building_ruby.md
+++ b/doc/contributing/building_ruby.md
@@ -6,7 +6,7 @@ https://github.com/ruby/ruby/blob/trunk/doc/contributing/building_ruby.md#L6
 
     * C compiler
     * autoconf - 2.67 or later
-    * bison - 2.0 or later
+    * bison - 3.0 or later
     * gperf - 3.0.3 or later
     * ruby - 2.7 or later
 
-- 
cgit v1.2.3


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