diff --git a/Cargo.toml b/Cargo.toml
index 138b5ba..04e6d81 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 
 [package]
 name = "r2r"
-version = "0.3.8"
+version = "0.4.0"
 authors = ["Martin Dahl <martin.dahl@gmail.com>"]
 description = "Minimal ros2 bindings."
 license = "Apache-2.0/MIT"