zlib.gemspec in zlib-3.0.0 vs zlib.gemspec in zlib-3.1.0

- old
+ new

@@ -25,7 +25,7 @@
   spec.files         = ["LICENSE.txt", "README.md", "ext/zlib/extconf.rb", "ext/zlib/zlib.c", "zlib.gemspec"]
   spec.bindir        = "exe"
   spec.executables   = []
   spec.require_paths = ["lib"]
   spec.extensions    = "ext/zlib/extconf.rb"
-  spec.required_ruby_version = ">= 2.3.0"
+  spec.required_ruby_version = ">= 2.5.0"
 end