diff --git a/setup.py b/setup.py
index 31aa525..e5703fe 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
 
 setuptools.setup(
     name='agents',
-    version='1.3.2',
+    version='1.4.0',
     description=(
         'Efficient TensorFlow implementation of reinforcement learning '
         'algorithms.'),