diff --git a/knock.gemspec b/knock.gemspec
index a8d7ce4..8f0a4a8 100644
--- a/knock.gemspec
+++ b/knock.gemspec
@@ -24,5 +24,5 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency "sqlite3", "~> 1.3"
   s.add_development_dependency "timecop", "~> 0.8.0"
-  s.add_development_dependency "webmock", "~> 2.1"
+  s.add_development_dependency "webmock", "~> 3.0"
 end