diff --git a/lib/ldclient-rb/version.rb b/lib/ldclient-rb/version.rb
index 83539921..746e2519 100644
--- a/lib/ldclient-rb/version.rb
+++ b/lib/ldclient-rb/version.rb
@@ -1,3 +1,3 @@
 module LaunchDarkly
-  VERSION = "3.0.3"
+  VERSION = "4.0.0"
 end