Try fixing CI

Author: MaxLap

activerecord_where_assoc.gemspec

@@ -36,5 +36,5 @@ Gem::Specification.new do |spec|
 
   # Travis-CI takes care of the other ones
   # Using conditions because someone might not even be able to install the gems
-  spec.add_development_dependency "pg", "< 1.0.0" if ENV["CI"] || ENV["ALL_DB"] || ["pg", "postgres", "postgresql"].include?(ENV["DB"])
+  spec.add_development_dependency "pg" if ENV["CI"] || ENV["ALL_DB"] || ["pg", "postgres", "postgresql"].include?(ENV["DB"])
 end

gemfiles/rails_4_2.gemfile

@@ -4,6 +4,7 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 4.2.0"
 gem "sqlite3", "~> 1.3.6"
+gem "pg", "< 1.0.0"
 
 # Ruby 2.4 tried to use bigdecimal 3, which removed BigDecimal.new
 gem "bigdecimal", "1.3.5"