diff --git a/safe_transaction_service/version.py b/safe_transaction_service/version.py
index 3400b1f97..ae21fc270 100644
--- a/safe_transaction_service/version.py
+++ b/safe_transaction_service/version.py
@@ -1,2 +1,2 @@
-__version__ = '1.3.6'
+__version__ = '1.4.0'
 __version_info__ = tuple([int(num) if num.isdigit() else num for num in __version__.replace('-', '.', 1).split('.')])