diff --git a/spree_gateway.gemspec b/spree_gateway.gemspec
index e87a726c..348973b8 100644
--- a/spree_gateway.gemspec
+++ b/spree_gateway.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'spree_core', '>= 3.7.0'
   s.add_dependency 'spree_extension'
 
-  s.add_development_dependency 'braintree', '~> 3.0.0'
+  s.add_development_dependency 'braintree', '~> 4.3.0'
   s.add_development_dependency 'rspec-activemodel-mocks'
   s.add_development_dependency 'spree_dev_tools'
 end