1 files changed, 1 insertions, 0 deletions
diff --git a/MANIFEST b/MANIFEST
index aea39a01bd..8395013723 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -890,6 +890,7 @@ test/ruby/test_float.rb
 test/ruby/test_gc.rb
 test/ruby/test_hash.rb
 test/ruby/test_ifunless.rb
+test/ruby/test_io.rb
 test/ruby/test_iterator.rb
 test/ruby/test_marshal.rb
 test/ruby/test_math.rb