diff --git a/fog-openstack.gemspec b/fog-openstack.gemspec
index 9adb5e47..8997d518 100644
--- a/fog-openstack.gemspec
+++ b/fog-openstack.gemspec
@@ -39,5 +39,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rubocop-minitest'
   spec.add_development_dependency 'shindo',  '~> 0.3'
   spec.add_development_dependency 'vcr'
-  spec.add_development_dependency 'webmock',  '~> 3.25.0'
+  spec.add_development_dependency 'webmock',  '~> 3.26.4'
 end