diff --git a/schema/defs.json b/schema/defs.json
index 89523607d..b23e1ac9a 100644
--- a/schema/defs.json
+++ b/schema/defs.json
@@ -56,6 +56,16 @@
                 }
             ]
         },
+        "int64Pointer": {
+            "oneOf": [
+                {
+                    "$ref": "#/definitions/int64"
+                },
+                {
+                    "type": "null"
+                }
+            ]
+        },
         "uint16Pointer": {
             "oneOf": [
                 {