diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab1c311..ad95e24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 0.3.0
+
+- be specified dependency for omniauth 1.9.
+
 ## 0.2.1
 
 - fix rubocop warnings.
diff --git a/lib/omniauth-calendly/version.rb b/lib/omniauth-calendly/version.rb
index 27f8f95..1b5c5e4 100644
--- a/lib/omniauth-calendly/version.rb
+++ b/lib/omniauth-calendly/version.rb
@@ -2,6 +2,6 @@
 
 module OmniAuth
   module Calendly
-    VERSION = '0.2.1'
+    VERSION = '0.3.0'
   end
 end
diff --git a/omniauth-calendly.gemspec b/omniauth-calendly.gemspec
index 2d91ccb..a8d8cba 100644
--- a/omniauth-calendly.gemspec
+++ b/omniauth-calendly.gemspec
@@ -28,7 +28,8 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency 'omniauth-oauth2', '>= 1.6.0'
+  spec.add_runtime_dependency 'omniauth', '~> 1.9'
+  spec.add_runtime_dependency 'omniauth-oauth2', '~> 1.6.0'
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'codecov'