diff --git a/test/ruby/test_io_m17n.rb b/test/ruby/test_io_m17n.rb
index 13d056b54d..c0c3742460 100644
--- a/test/ruby/test_io_m17n.rb
+++ b/test/ruby/test_io_m17n.rb
@@ -2639,7 +2639,7 @@ EOT
         begin
           assert_in_out_err(args, "", out, err,
                             "#{bug11444}: #{test} in #{mode} mode",
-                            timeout: 1)
+                            timeout: 10)
         rescue Exception => e
           failure << e
         end