diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57c3ca6..b7198d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 0.4.0 (25/03/2015)
+
+### Changes
+
+* Adds an implementation of JWT header auth ([@tbetbetbe][])
+
 ## 0.3.0 (23/03/2015)
 
 ### Changes
diff --git a/googleauth.gemspec b/googleauth.gemspec
index c4ca4bc..1be9b48 100755
--- a/googleauth.gemspec
+++ b/googleauth.gemspec
@@ -27,15 +27,15 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'faraday', '~> 0.9'
   s.add_dependency 'logging', '~> 1.8'
-  s.add_dependency 'jwt', '~> 1.4.1'
-  s.add_dependency 'memoist', '~> 0.11.0'
-  s.add_dependency 'multi_json', '1.11.0'
-  s.add_dependency 'signet', '~> 0.6.0'
+  s.add_dependency 'jwt', '~> 1.4'
+  s.add_dependency 'memoist', '~> 0.11'
+  s.add_dependency 'multi_json', '1.11'
+  s.add_dependency 'signet', '~> 0.6'
 
   s.add_development_dependency 'bundler', '~> 1.7'
-  s.add_development_dependency 'simplecov', '~> 0.9.2'
-  s.add_development_dependency 'coveralls', '~> 0.7.11'
+  s.add_development_dependency 'simplecov', '~> 0.9'
+  s.add_development_dependency 'coveralls', '~> 0.7'
   s.add_development_dependency 'rake', '~> 10.0'
-  s.add_development_dependency 'rubocop', '~> 0.29.1'
+  s.add_development_dependency 'rubocop', '~> 0.29'
   s.add_development_dependency 'rspec', '~> 3.0'
 end
diff --git a/lib/googleauth/version.rb b/lib/googleauth/version.rb
index 29a9962..6d58618 100644
--- a/lib/googleauth/version.rb
+++ b/lib/googleauth/version.rb
@@ -31,6 +31,6 @@ module Google
   # Module Auth provides classes that provide Google-specific authorization
   # used to access Google APIs.
   module Auth
-    VERSION = '0.3.0'
+    VERSION = '0.4.0'
   end
 end