diff --git a/safe_locking_service/__init__.py b/safe_locking_service/__init__.py
index d12a7c5..b25e738 100644
--- a/safe_locking_service/__init__.py
+++ b/safe_locking_service/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.3.1"
+__version__ = "0.4.0"
 __version_info__ = tuple(
     int(num) if num.isdigit() else num
     for num in __version__.replace("-", ".", 1).split(".")