diff --git a/td-client.gemspec b/td-client.gemspec
index 4724e98..cbf693a 100644
--- a/td-client.gemspec
+++ b/td-client.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency "httpclient", ">= 2.7"
   gem.add_development_dependency "rspec", "~> 3.0"
   gem.add_development_dependency 'coveralls_reborn'
-  gem.add_development_dependency "webmock", "~> 3.25.1"
+  gem.add_development_dependency "webmock", "~> 3.26.1"
   gem.add_development_dependency "mutex_m"
   gem.add_development_dependency 'simplecov', '>= 0.21.2'
   gem.add_development_dependency 'rake'