diff --git a/data/mntner/SIS-MNT b/data/mntner/SIS-MNT
index f1717c326..658bde6cf 100644
--- a/data/mntner/SIS-MNT
+++ b/data/mntner/SIS-MNT
@@ -1,6 +1,8 @@
 mntner:             SIS-MNT
 descr:              SIS DN42
 abuse-mailbox:      hostmaster+abuse@smartinternet.eu
+auth:               pgp-fingerprint 6EEA5884091B6DC84DF44B851B11FF897AC1EED7
+auth:               pgp-fingerprint CE0E2E08457FD22CC05E53976BF0C51BE5163380
 admin-c:            CR-DN42
 tech-c:             CR-DN42
 mnt-by:             SIS-MNT