rails51.gemfile in audited-4.9.0

- old
+ new

@@ -1,7 +1,10 @@
 # This file was generated by Appraisal
 
 source "https://rubygems.org"
 
 gem "rails", "~> 5.1.4"
+gem "mysql2", ">= 0.3.18", "< 0.6.0"
+gem "pg", ">= 0.18", "< 2.0"
+gem "sqlite3", "~> 1.3.6"
 
 gemspec name: "audited", path: "../"