diff --git a/turtle.gemspec b/turtle.gemspec
index a05eac7..6d81119 100644
--- a/turtle.gemspec
+++ b/turtle.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   spec.required_ruby_version = '>= 2.5.1'
 
-  spec.add_dependency 'aws-sdk-core', '~> 3'
+  spec.add_dependency 'aws-sdk-core', '< 3.192.0'
   spec.add_dependency 'aws-sdk-sns', '>= 1.18.0'
   spec.add_dependency 'aws-sdk-sqs', '>= 1.18', '< 1.35'