diff --git a/monikerclient/resources/schemas/v1/server.json b/monikerclient/resources/schemas/v1/server.json
index 2af9c78..48c4dd1 100644
--- a/monikerclient/resources/schemas/v1/server.json
+++ b/monikerclient/resources/schemas/v1/server.json
@@ -21,12 +21,12 @@
             "required": true
         },
         "ipv4": {
-            "type": "string",
+            "type": ["string", "null"],
             "description": "IPv4 address of server",
             "format": "ip-address"
         },
         "ipv6": {
-            "type": "string",
+            "type": ["string", "null"],
             "description": "IPv6 address of server",
             "format": "ipv6"
         },