diff --git a/google-api-client.gemspec b/google-api-client.gemspec
index dd4b4142ed9..c54ded91347 100644
--- a/google-api-client.gemspec
+++ b/google-api-client.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '~> 2.0'
 
-  spec.add_runtime_dependency 'representable', '~> 3.0'
+  spec.add_runtime_dependency 'representable', '~> 2.3.0'
   spec.add_runtime_dependency 'retriable', '>= 2.0', '< 4.0'
   spec.add_runtime_dependency 'addressable', '~> 2.5', '>= 2.5.1'
   spec.add_runtime_dependency 'mini_mime', '~> 1.0'