diff --git a/teams/vDevPreview/MicrosoftTeams.schema.json b/teams/vDevPreview/MicrosoftTeams.schema.json
index c404dfd..7769deb 100644
--- a/teams/vDevPreview/MicrosoftTeams.schema.json
+++ b/teams/vDevPreview/MicrosoftTeams.schema.json
@@ -696,6 +696,10 @@
                                                 "description": "Type of the parameter",
                                                 "default": "text"
                                             },
+                                            "isRequired": {
+                                                "type": "boolean",
+                                                "description": "Indicates whether this parameter is required or not. By default, it is not."
+                                            },
                                             "title": {
                                                 "type": "string",
                                                 "description": "Title of the parameter.",
@@ -2496,4 +2500,4 @@
             "additionalProperties": false
         }
     }
-}
\ No newline at end of file
+}