Permit usage of puma 3.11.4 between Ruby 1.9.3 and 2.2

Author: benoittgt

Gemfile-rails-dependencies

@@ -20,7 +20,9 @@ when /stable$/
   gem_list = %w[rails railties actionmailer actionpack activerecord activesupport]
   gem_list << 'activejob'  if version > '4-1-stable'
   gem_list << 'actionview' if version > '4-0-stable'
-  if RUBY_VERSION  >= "2.2"
+  if RUBY_VERSION  >= "1.9.3" && RUBY_VERSION < "2.2"
+    gem "puma", "~> 3.11.4"
+  elsif RUBY_VERSION  >= "2.2"
     gem_list << 'puma' if version > '5-0-stable'
   end
 
@@ -40,8 +42,12 @@ when nil, false, ""
 else
   gem "rails", version
 
-  if version >= '5-1-stable' && RUBY_VERSION  >= "2.2"
-    gem "puma"
+  if version >= '5-1-stable'
+    if RUBY_VERSION < "2.2"
+      gem "puma", "~> 3.11.4"
+    else
+      gem "puma"
+    end
   end
 end