diff --git a/manageiq-schema.gemspec b/manageiq-schema.gemspec
index dddf20a60..1c8997c64 100644
--- a/manageiq-schema.gemspec
+++ b/manageiq-schema.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency "activerecord-id_regions"
   s.add_dependency "more_core_extensions"
-  s.add_dependency "pg"
+  s.add_dependency "pg", "~> 0.18.2"
   s.add_dependency "rails", "~> 5.0.2"
 
   s.add_dependency "manageiq-gems-pending"  # This is just for MiqPassword for now