diff --git a/janus/__init__.py b/janus/__init__.py
index 85e282d..558bfbe 100644
--- a/janus/__init__.py
+++ b/janus/__init__.py
@@ -8,7 +8,7 @@
 from queue import Empty as SyncQueueEmpty
 from queue import Full as SyncQueueFull
 
-__version__ = '0.4.0a0'
+__version__ = '0.4.0'
 
 log = logging.getLogger(__package__)