diff --git a/capybara-mechanize.gemspec b/capybara-mechanize.gemspec
index 36aafab..e4e3a54 100644
--- a/capybara-mechanize.gemspec
+++ b/capybara-mechanize.gemspec
@@ -20,8 +20,8 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
   s.rubygems_version = '1.3.7'
 
-  s.add_runtime_dependency('capybara', ['>= 3.0.0', '< 4'])
-  s.add_runtime_dependency('mechanize', ['~> 2.7.0'])
+  s.add_runtime_dependency('capybara', ['>= 3.0.0', '< 3.37.0'])
+  s.add_runtime_dependency('mechanize', ['~> 2.8.5'])
 
   s.add_development_dependency('launchy', ['>= 2.0.4'])
   s.add_development_dependency('rake')