https://git.ruby-lang.org/ruby.git/commit/?id=ba3b99b96a

From ba3b99b96a4e2421a90a7d57ade5ef016aec73d0 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Wed, 8 Apr 2020 15:59:55 +0900
Subject: The current net-http is only works with Ruby 2.6+


diff --git a/lib/net/http/net-http.gemspec b/lib/net/http/net-http.gemspec
index 3a37a43..cf3c5bd 100644
--- a/lib/net/http/net-http.gemspec
+++ b/lib/net/http/net-http.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |spec| https://github.com/ruby/ruby/blob/trunk/lib/net/http/net-http.gemspec#L13
   spec.summary       = %q{HTTP client api for Ruby.}
   spec.description   = %q{HTTP client api for Ruby.}
   spec.homepage      = "https://github.com/ruby/net-http"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.6.0")
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
-- 
cgit v0.10.2


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