diff --git a/pkg/acsengine/defaults.go b/pkg/acsengine/defaults.go
index c32aea8196..80a3329c03 100644
--- a/pkg/acsengine/defaults.go
+++ b/pkg/acsengine/defaults.go
@@ -68,7 +68,7 @@ var (
 		ImageOffer:     "UbuntuServer",
 		ImageSku:       "16.04-LTS",
 		ImagePublisher: "Canonical",
-		ImageVersion:   "16.04.201806220",
+		ImageVersion:   "16.04.201807240",
 	}
 
 	//DefaultRHELOSImageConfig is the RHEL Linux distribution.