diff --git a/schemas/api-config/fieldMeta.json b/schemas/api-config/fieldMeta.json
index deeef0d..76f0d0f 100644
--- a/schemas/api-config/fieldMeta.json
+++ b/schemas/api-config/fieldMeta.json
@@ -11,13 +11,23 @@
         {
             "$ref": "#/definitions/minimum",
             "patternProperties": {
-                "^x-.*|widget$": { "$comment": "stub for allOf" }
+                "^x-.*|widget|inputProps$": { "$comment": "stub for allOf" }
             },
             "allOf": [
                 {
                     "properties": {
                         "widget": { "enum": ["text", "checkbox"] }
                     }
+                },
+                {
+                    "properties": {
+                        "inputProps": {
+                            "type": "object",
+                            "properties": {
+                                "multiline": { "type": "boolean" }
+                            }
+                        }
+                    }
                 }
             ]
         },