diff --git a/python/arcticdb/__init__.py b/python/arcticdb/__init__.py
index e03f7e8c1d..d6baaae550 100644
--- a/python/arcticdb/__init__.py
+++ b/python/arcticdb/__init__.py
@@ -14,4 +14,4 @@
 
 set_config_from_env_vars(_os.environ)
 
-__version__ = "4.0.0"
+__version__ = "4.0.4"
diff --git a/setup.cfg b/setup.cfg
index 0bc2943477..4bd93c32ee 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = arcticdb
-version = 4.0.0
+version = 4.0.4
 description = ArcticDB DataFrame Database
 author = Man Alpha Technology
 author_email = arcticdb@man.com