Gemfile in redis_counters-1.3.0 vs Gemfile in redis_counters-1.4.0

@@ -1,3 +1,6 @@
 source 'https://rubygems.org'
 
-gemspec
\ No newline at end of file
+gem 'json', '< 2' if RUBY_VERSION < '2'
+gem 'activesupport', '< 5' if RUBY_VERSION < '2'
+
+gemspec