diff --git a/VERSION b/VERSION
index 07a45d78..d532fd93 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.21
+1.5.22
diff --git a/lib/stripe/version.rb b/lib/stripe/version.rb
index eac0f0bb..8d12c0b6 100644
--- a/lib/stripe/version.rb
+++ b/lib/stripe/version.rb
@@ -1,3 +1,3 @@
 module Stripe
-  VERSION = '1.5.21'
+  VERSION = '1.5.22'
 end
diff --git a/stripe.gemspec b/stripe.gemspec
index 2fd39d94..fdc2d6a9 100644
--- a/stripe.gemspec
+++ b/stripe.gemspec
@@ -13,7 +13,7 @@ spec = Gem::Specification.new do |s|
   s.executables = 'stripe-console'
   s.require_paths = %w{lib}
 
-  s.add_dependency('rest-client')
+  s.add_dependency('rest-client', '~> 1.4.0')
 
   s.add_development_dependency('mocha')
   s.add_development_dependency('shoulda')