diff --git a/test/unit/ntp_core.c b/test/unit/ntp_core.c
index 82e2731..b5c148a 100644
--- a/test/unit/ntp_core.c
+++ b/test/unit/ntp_core.c
@@ -73,7 +73,7 @@ get_random_key_id(void)
   uint32_t id;
 
   do {
-    id = random() % 6 + 2;
+    id = random() % 8 + 2;
   } while (!KEY_KeyKnown(id));
 
   return id;
diff --git a/test/unit/ntp_core.keys b/test/unit/ntp_core.keys
index f06237f..a3e4f6c 100644
--- a/test/unit/ntp_core.keys
+++ b/test/unit/ntp_core.keys
@@ -4,3 +4,5 @@
 5 SHA1 HEX:B71744EA01FBF01CA30D173ECDDF901952AE356A
 6 SHA512 HEX:DE027482F22B201FC20863F58C74095E7906089F
 7 SHA512 HEX:DE027482F22B201FC20863F58C74095E7906089F
+8 AES128 HEX:5D5E8A31D4B459A66D445259E147CFB5
+9 AES128 HEX:5D5E8A31D4B459A66D445259E147CFB5