diff --git a/lark/__init__.py b/lark/__init__.py
index 7973d49..eac6e5a 100644
--- a/lark/__init__.py
+++ b/lark/__init__.py
@@ -3,4 +3,4 @@ from .common import ParseError, GrammarError
 from .lark import Lark
 from .utils import inline_args
 
-__version__ = "0.3.7"
+__version__ = "0.4.0"