1 files changed, 1 insertions, 0 deletions

diff --git a/.document b/.document
index 6e08f42698..9cdd66f87a 100644
--- a/.document
+++ b/.document
@@ -22,6 +22,7 @@ numeric.rb
 nilclass.rb
 pack.rb
 ractor.rb
+string.rb
 timev.rb
 trace_point.rb
 warning.rb