diff --git a/lark-stubs/lexer.pyi b/lark-stubs/lexer.pyi
index a43b754..1ae861d 100644
--- a/lark-stubs/lexer.pyi
+++ b/lark-stubs/lexer.pyi
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-
+from types import ModuleType
 from typing import (
     TypeVar, Type, Tuple, List, Dict, Iterator, Collection, Callable, Optional,
     Pattern as REPattern,
@@ -111,6 +111,7 @@ class TraditionalLexer(Lexer):
     def __init__(
         self,
         terminals: Collection[TerminalDef],
+        re_: ModuleType,
         ignore: Collection[str] = ...,
         user_callbacks: Dict[str, _Callback] = ...,
         g_regex_flags: int = ...
@@ -135,6 +136,7 @@ class ContextualLexer(Lexer):
         self,
         terminals: Collection[TerminalDef],
         states: Dict[str, Collection[str]],
+        re_: ModuleType,
         ignore: Collection[str] = ...,
         always_accept: Collection[str] = ...,
         user_callbacks: Dict[str, _Callback] = ...,