diff --git a/amazon-chime-sdk-rails.gemspec b/amazon-chime-sdk-rails.gemspec
index 420fa82..78639b3 100644
--- a/amazon-chime-sdk-rails.gemspec
+++ b/amazon-chime-sdk-rails.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 2.2.2'
 
   s.add_dependency 'railties', '>= 5.0.0'
-  s.add_dependency 'aws-sdk-chime', '>= 1.0.0'
+  s.add_dependency 'aws-sdk-chime', '1.78.0'
 
   s.add_development_dependency 'rspec-rails', '>= 4.0.1'
   s.add_development_dependency 'factory_bot_rails', '>= 6.1.0'