diff --git a/envmgr/__init__.py b/envmgr/__init__.py
index 7cc83b3..cad940a 100755
--- a/envmgr/__init__.py
+++ b/envmgr/__init__.py
@@ -1,4 +1,4 @@
 # Copyright (c) Trainline Limited, 2017. All rights reserved. See LICENSE.txt in the project root for license information.
 
-__version__ = '1.3.1'
+__version__ = '1.4.0'
 
diff --git a/envmgr/cli.py b/envmgr/cli.py
index 76bbe5f..91d513d 100755
--- a/envmgr/cli.py
+++ b/envmgr/cli.py
@@ -127,7 +127,7 @@
 def except_hook(exec_type, value, trace_back):
     print(value)
 
-# sys.excepthook = except_hook
+sys.excepthook = except_hook
 
 def main():
     """Main CLI entrypoint."""