diff --git a/ruby-lsp-rails.gemspec b/ruby-lsp-rails.gemspec
index 73d633b1..212c2eb9 100644
--- a/ruby-lsp-rails.gemspec
+++ b/ruby-lsp-rails.gemspec
@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
   spec.metadata["changelog_uri"] = "#{spec.homepage}/releases"
+  spec.metadata["documentation_uri"] = "https://shopify.github.io/ruby-lsp/rails-addon.html"
 
   spec.required_ruby_version = ">= 3.0.0"