diff --git a/site.mk b/site.mk
index d399a97d00e51d77d222b5de8ca5acc6b74a0f08..2f6335b4161eae1b7dda3c556bd6b2da1fc39317 100644
--- a/site.mk
+++ b/site.mk
@@ -63,7 +63,7 @@ DEFAULT_BUILD_DATE := $(shell date '+%Y-%m-%d')
 
 BUILD_DATE ?= $(DEFAULT_BUILD_DATE)
 
-DEFAULT_GLUON_RELEASE := 1.4+$(BUILD_DATE)-g.$(shell git -C $(GLUON_SITEDIR)/../ log --pretty=format:'%h' -n 1)-s.$(shell git -C $(GLUON_SITEDIR) log --pretty=format:'%h' -n 1)
+DEFAULT_GLUON_RELEASE := 1.5+$(BUILD_DATE)-g.$(shell git -C $(GLUON_SITEDIR)/../ log --pretty=format:'%h' -n 1)-s.$(shell git -C $(GLUON_SITEDIR) log --pretty=format:'%h' -n 1)
 
 GLUON_LANGS := de en