diff --git a/README.md b/README.md
index a1a6bd7..a6b1637 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-This fork provides thoroughly untested and unsupport Rails 5 compatability for `prototype-rails`.
+This fork provides thoroughly untested and unsupport Rails 7 compatability for `prototype-rails`.
diff --git a/lib/prototype-rails/on_load_action_controller.rb b/lib/prototype-rails/on_load_action_controller.rb
index 92302e7..d5542c7 100644
--- a/lib/prototype-rails/on_load_action_controller.rb
+++ b/lib/prototype-rails/on_load_action_controller.rb
@@ -1,2 +1,3 @@
 require 'prototype-rails/selector_assertions'
 require 'prototype-rails/renderers'
+require 'prototype-rails/update_rendering'
diff --git a/lib/prototype-rails/update_rendering.rb b/lib/prototype-rails/update_rendering.rb
new file mode 100644
index 0000000..5cdea94
--- /dev/null
+++ b/lib/prototype-rails/update_rendering.rb
@@ -0,0 +1,16 @@
+require 'action_controller/metal/rendering'
+
+module ActionController::Rendering::UpdateRendering
+
+  private
+
+  # Normalize arguments by catching blocks and setting them on :update.
+  # Copied from rails 6
+  def _normalize_args(action = nil, options = {}, &blk)
+    options = super
+    options[:update] = blk if block_given?
+    options
+  end
+end
+
+ActionController::Rendering.include ActionController::Rendering::UpdateRendering