Makefile: VERSION=0.4

Signed-off-by: Josh Triplett <josh@freedesktop.org>
diff --git a/Makefile b/Makefile
index b15374c..2475e12 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION=0.3
+VERSION=0.4
 
 OS ?= linux