migration-lock-timeout.gemspec in migration-lock-timeout-1.1.0 vs migration-lock-timeout.gemspec in migration-lock-timeout-1.2.0

@@ -27,10 +27,10 @@
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "appraisal"
   spec.add_development_dependency "database_cleaner"
-  spec.add_development_dependency "pg"
+  spec.add_development_dependency "pg", "< 1.0"
   spec.add_development_dependency "pry"
   spec.add_development_dependency "rake", "~> 11.2.2"
   spec.add_development_dependency "rspec", "~> 3.0"
 
   spec.add_runtime_dependency "activerecord", ">= 4.0", "< 6.0"