diff --git a/stage0/00-configure-apt/files/sources.list b/stage0/00-configure-apt/files/sources.list
index 1c18c60..51290f6 100644
--- a/stage0/00-configure-apt/files/sources.list
+++ b/stage0/00-configure-apt/files/sources.list
@@ -1,5 +1,7 @@
 deb http://deb.debian.org/debian RELEASE main contrib non-free
+deb http://security.debian.org/debian-security RELEASE-security main contrib non-free
 deb http://deb.debian.org/debian RELEASE-updates main contrib non-free
 # Uncomment deb-src lines below then 'apt-get update' to enable 'apt-get source'
 #deb-src http://deb.debian.org/debian RELEASE main contrib non-free
+#deb-src http://security.debian.org/debian-security RELEASE-security main contrib non-free
 #deb-src http://deb.debian.org/debian RELEASE-updates main contrib non-free