diff --git a/ldclient/version.py b/ldclient/version.py
index 73f980c6..773464bb 100644
--- a/ldclient/version.py
+++ b/ldclient/version.py
@@ -1 +1 @@
-VERSION = "4.1.0"
+VERSION = "4.2.0"
diff --git a/setup.py b/setup.py
index afb453fb..d693dc71 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 
 from pip.req import parse_requirements
 
-ldclient_version='4.1.0'
+ldclient_version='4.2.0'
 
 # parse_requirements() returns generator of pip.req.InstallRequirement objects
 install_reqs = parse_requirements('requirements.txt', session=uuid.uuid1())