diff --git a/lib/ruby_lsp/requests/support/test_item.rb b/lib/ruby_lsp/requests/support/test_item.rb
index 53aeb76149..28dc7c7786 100644
--- a/lib/ruby_lsp/requests/support/test_item.rb
+++ b/lib/ruby_lsp/requests/support/test_item.rb
@@ -52,6 +52,7 @@ def to_hash
             label: @label,
             uri: @uri,
             range: @range,
+            tags: @tags,
             children: children.map(&:to_hash),
           }
         end
diff --git a/test/response_builders/test_collection_test.rb b/test/response_builders/test_collection_test.rb
index c5e08c0755..2e9cfaa5e9 100644
--- a/test/response_builders/test_collection_test.rb
+++ b/test/response_builders/test_collection_test.rb
@@ -46,7 +46,7 @@ def test_overrides_if_trying_to_add_item_with_same_id
     private
 
     def assert_expected_fields(hash)
-      [:id, :label, :uri, :range, :children].each do |field|
+      [:id, :label, :uri, :range, :children, :tags].each do |field|
         assert(hash[field])
       end