omniauth-oauth2.gemspec in omniauth-oauth2-1.7.3 vs omniauth-oauth2.gemspec in omniauth-oauth2-1.8.0

@@ -2,10 +2,10 @@
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require "omniauth-oauth2/version"
 
 Gem::Specification.new do |gem|
   gem.add_dependency "oauth2",     [">= 1.4", "< 3"]
-  gem.add_dependency "omniauth",   [">= 1.9", "< 3"]
+  gem.add_dependency "omniauth",   "~> 2.0"
 
   gem.add_development_dependency "bundler", "~> 2.0"
 
   gem.authors       = ["Michael Bleigh", "Erik Michaels-Ober", "Tom Milewski"]
   gem.email         = ["[e-mail]", "[e-mail]", "[e-mail]"]