From 78ef7eeb36f66ef8c47eccd37ca1526ee14a5758 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Mon, 14 Sep 2020 14:07:37 +0900
Subject: [PATCH] Manually picked
 https://github.com/ruby/open3/commit/724bdb8e1de939e71a6aa8a65ccf6980f53f4353

---
 lib/open3.gemspec | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/open3.gemspec b/lib/open3.gemspec
index 876592024e..ad9485adc7 100644
--- a/lib/open3.gemspec
+++ b/lib/open3.gemspec
@@ -17,6 +17,7 @@ Gem::Specification.new do |spec|
   spec.description   = spec.summary
   spec.homepage      = "https://github.com/ruby/open3"
   spec.licenses      = ["Ruby", "BSD-2-Clause"]
+  spec.required_ruby_version = ">= 2.6.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage