diff --git a/setup.py b/setup.py
index bf824ff0..4e6214e2 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ def read(fname):
 
 setup(
     name = "yotta",
-    version = "0.4.1",
+    version = "0.4.2",
     author = "James Crosby",
     author_email = "James.Crosby@arm.com",
     description = ("Re-usable components for embedded software."),