diff --git a/management/dns_update.py b/management/dns_update.py
index 90ce0fe0..3fc169af 100755
--- a/management/dns_update.py
+++ b/management/dns_update.py
@@ -493,7 +493,7 @@ def build_sshfp_records():
 					pass
 				break
 
-	keys = shell("check_output", ["ssh-keyscan", "-t", "rsa,dsa,ecdsa,ed25519", "-p", str(port), "localhost"])
+	keys = shell("check_output", ["ssh-keyscan", "-4", "-t", "rsa,dsa,ecdsa,ed25519", "-p", str(port), "localhost"])
 	keys = sorted(keys.split("\n"))
 
 	for key in keys: