diff --git a/images/koolbox/.release b/images/koolbox/.release
index 7f1bdeb40c1300cd15edddfa5b46c9499bac4319..9ecf65833e93819c610252d4a015a950b621a0dc 100644
--- a/images/koolbox/.release
+++ b/images/koolbox/.release
@@ -1 +1 @@
-release=0.3.0
+release=0.4.0