diff --git a/site.mk b/site.mk
index c7a6ba1..c7fedc3 100644
--- a/site.mk
+++ b/site.mk
@@ -25,7 +25,7 @@ GLUON_SITE_PACKAGES := \
 	haveged
 
 
-DEFAULT_GLUON_RELEASE := 0.7
+DEFAULT_GLUON_RELEASE := 0.7+exp$(shell date '+%Y%m%d')
 
 # Allow overriding the release number from the command line
 GLUON_RELEASE ?= $(DEFAULT_GLUON_RELEASE)