diff --git a/lib/omniauth-slack/version.rb b/lib/omniauth-slack/version.rb
index 12e86ef..88cee77 100644
--- a/lib/omniauth-slack/version.rb
+++ b/lib/omniauth-slack/version.rb
@@ -1,5 +1,5 @@
 module Omniauth
   module Slack
-    VERSION = "2.3.0"
+    VERSION = "2.3.1"
   end
 end
diff --git a/omniauth-slack.gemspec b/omniauth-slack.gemspec
index 2474bf0..1d7b356 100644
--- a/omniauth-slack.gemspec
+++ b/omniauth-slack.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency 'omniauth-oauth2', "~> 1.4"
+  spec.add_runtime_dependency 'omniauth-oauth2', "~> 1.5"
 
   spec.add_development_dependency "bundler", "~> 1.11.2"
   spec.add_development_dependency "rake"