diff --git a/lib/omniauth-oauth2/version.rb b/lib/omniauth-oauth2/version.rb
index a6db730..b522517 100644
--- a/lib/omniauth-oauth2/version.rb
+++ b/lib/omniauth-oauth2/version.rb
@@ -1,5 +1,5 @@
 module OmniAuth
   module OAuth2
-    VERSION = "1.7.0".freeze
+    VERSION = "1.7.1".freeze
   end
 end
diff --git a/omniauth-oauth2.gemspec b/omniauth-oauth2.gemspec
index 20abb26..e436b4c 100644
--- a/omniauth-oauth2.gemspec
+++ b/omniauth-oauth2.gemspec
@@ -4,7 +4,7 @@ require "omniauth-oauth2/version"
 
 Gem::Specification.new do |gem|
   gem.add_dependency "oauth2",     "~> 1.4"
-  gem.add_dependency "omniauth",   "~> 1.9"
+  gem.add_dependency "omniauth",   [">= 1.9", "< 3"]
 
   gem.add_development_dependency "bundler", "~> 2.0"