identity_cache.gemspec in identity_cache-0.2.2 vs identity_cache.gemspec in identity_cache-0.2.3

@@ -28,8 +28,9 @@
   if RUBY_PLATFORM == 'java'
     raise NotImplementedError
   else
     gem.add_development_dependency('cityhash', '0.6.0')
     gem.add_development_dependency('mysql2')
+    gem.add_development_dependency('pg')
     gem.add_development_dependency('stackprof') if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.1.0")
   end
 end