diff --git a/Gemfile.lock b/Gemfile.lock
index 3abb910..54a97af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    repost (0.3.0)
+    repost (0.3.1)
 
 GEM
   remote: https://rubygems.org/
diff --git a/lib/repost/extend_controller.rb b/lib/repost/extend_controller.rb
index f0aa689..d2fa759 100644
--- a/lib/repost/extend_controller.rb
+++ b/lib/repost/extend_controller.rb
@@ -1,18 +1,19 @@
-if defined?(Rails)
-  class ::ActionController::Base
-    AUTO_TOKEN_OPTIONS = ['auto', :auto].freeze
+if defined?(Rails) && defined?(ActiveSupport)
+  ActiveSupport.on_load(:action_controller) do
+    class ::ActionController::Base
 
-    def repost(url, params: {}, options: {})
-      authenticity_token = form_authenticity_token if AUTO_TOKEN_OPTIONS.include?(options[:authenticity_token])
-      render html: Repost::Senpai.perform(
-        url,
-        params: params,
-        options: options.merge({authenticity_token: authenticity_token}.compact)
-      ).html_safe
-    end
+      def repost(url, params: {}, options: {})
+        authenticity_token = form_authenticity_token if ['auto', :auto].include?(options[:authenticity_token])
+        render html: Repost::Senpai.perform(
+          url,
+          params: params,
+          options: options.merge({authenticity_token: authenticity_token}.compact)
+        ).html_safe
+      end
 
-    alias :redirect_post :repost
+      alias :redirect_post :repost
 
+    end
   end
 end
 
diff --git a/lib/repost/version.rb b/lib/repost/version.rb
index 937f3c9..5d19d9a 100644
--- a/lib/repost/version.rb
+++ b/lib/repost/version.rb
@@ -1,3 +1,3 @@
 module Repost
-  VERSION = "0.3.0"
+  VERSION = "0.3.1"
 end