diff --git a/setup.py b/setup.py
index 3edc1e4f..26cb9cda 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
 
 setup(
     name='dopamine_rl',
-    version='4.0.8',
+    version='4.0.9',
     description=dopamine_description,
     long_description=long_description,
     long_description_content_type='text/markdown',