diff --git a/Makefile b/Makefile
index 528a5c37bc8d2..cc813ee41528e 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 VERSION = 5
 PATCHLEVEL = 13
 SUBLEVEL = 19
-EXTRAVERSION =
+EXTRAVERSION = -hardened1
 NAME = Opossums on Parade
 
 # *DOCUMENTATION*