diff --git a/lib/ruby_lsp/addon.rb b/lib/ruby_lsp/addon.rb
index af3171ce3..d9ec2a84b 100644
--- a/lib/ruby_lsp/addon.rb
+++ b/lib/ruby_lsp/addon.rb
@@ -54,14 +54,24 @@ def inherited(child_class)
       end
 
       # Discovers and loads all add-ons. Returns a list of errors when trying to require add-ons
-      sig { params(global_state: GlobalState, outgoing_queue: Thread::Queue).returns(T::Array[StandardError]) }
-      def load_addons(global_state, outgoing_queue)
+      sig do
+        params(
+          global_state: GlobalState,
+          outgoing_queue: Thread::Queue,
+          include_project_addons: T::Boolean,
+        ).returns(T::Array[StandardError])
+      end
+      def load_addons(global_state, outgoing_queue, include_project_addons: true)
         # Require all add-ons entry points, which should be placed under
         # `some_gem/lib/ruby_lsp/your_gem_name/addon.rb` or in the workspace under
         # `your_project/ruby_lsp/project_name/addon.rb`
-        errors = Gem.find_files("ruby_lsp/**/addon.rb")
-          .concat(Dir.glob(File.join(global_state.workspace_path, "**", "ruby_lsp/**/addon.rb")))
-          .filter_map do |addon_path|
+        addon_files = Gem.find_files("ruby_lsp/**/addon.rb")
+
+        if include_project_addons
+          addon_files.concat(Dir.glob(File.join(global_state.workspace_path, "**", "ruby_lsp/**/addon.rb")))
+        end
+
+        errors = addon_files.filter_map do |addon_path|
           # Avoid requiring this file twice. This may happen if you're working on the Ruby LSP itself and at the same
           # time have `ruby-lsp` installed as a vendored gem
           next if File.basename(File.dirname(addon_path)) == "ruby_lsp"
diff --git a/lib/ruby_lsp/server.rb b/lib/ruby_lsp/server.rb
index bf3aedaea..2f08a7693 100644
--- a/lib/ruby_lsp/server.rb
+++ b/lib/ruby_lsp/server.rb
@@ -123,9 +123,9 @@ def process_message(message)
       send_log_message("Error processing #{message[:method]}: #{e.full_message}", type: Constant::MessageType::ERROR)
     end
 
-    sig { void }
-    def load_addons
-      errors = Addon.load_addons(@global_state, @outgoing_queue)
+    sig { params(include_project_addons: T::Boolean).void }
+    def load_addons(include_project_addons: true)
+      errors = Addon.load_addons(@global_state, @outgoing_queue, include_project_addons: include_project_addons)
 
       if errors.any?
         send_log_message(
diff --git a/lib/ruby_lsp/test_helper.rb b/lib/ruby_lsp/test_helper.rb
index d01d2dc3b..fb21805ac 100644
--- a/lib/ruby_lsp/test_helper.rb
+++ b/lib/ruby_lsp/test_helper.rb
@@ -42,7 +42,7 @@ def with_server(source = nil, uri = Kernel.URI("file:///fake.rb"), stub_no_typec
         RubyIndexer::IndexablePath.new(nil, T.must(uri.to_standardized_path)),
         source,
       )
-      server.load_addons if load_addons
+      server.load_addons(include_project_addons: false) if load_addons
       block.call(server, uri)
     ensure
       if load_addons