diff --git a/lib/propane/version.rb b/lib/propane/version.rb
index 791524f..7123d0d 100644
--- a/lib/propane/version.rb
+++ b/lib/propane/version.rb
@@ -1,3 +1,3 @@
 class Propane
-  VERSION = "3.0.0"
+  VERSION = "4.0.0"
 end