diff --git a/TODO.md b/TODO.md
index 62868d8ce..ecf5a4a0d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,6 @@
 # Things to Do in the future
 
-# After mruby 3.1
+# After mruby 3.4
 
 - parser and code generator independent from `mrb_state` (picoruby?)
 - iv/hash entry cache