diff --git a/docs/source/user/error-codes.rst b/docs/source/user/error-codes.rst
index 3090d47..c8b46c1 100644
--- a/docs/source/user/error-codes.rst
+++ b/docs/source/user/error-codes.rst
@@ -59,6 +59,8 @@ generates its own :term:`error code`\ s for ``pyflakes``:
 +------+---------------------------------------------------------------------+
 | F541 | f-string without any placeholders                                   |
 +------+---------------------------------------------------------------------+
+| F542 | t-string without any placeholders                                   |
++------+---------------------------------------------------------------------+
 +------+---------------------------------------------------------------------+
 | F601 | dictionary key ``name`` repeated with different values              |
 +------+---------------------------------------------------------------------+