diff --git a/src/schema.js b/src/schema.js
index fe3b12a..55ce31d 100644
--- a/src/schema.js
+++ b/src/schema.js
@@ -23,6 +23,7 @@ let supportedOptions = Joi.object().keys({
 		is: Joi.exist(),
 		then: Joi.required()
 	}),
+	sharingProhibited: Joi.boolean(),
 	backgroundColor: Joi.string().min(10).max(16),
 	foregroundColor: Joi.string().min(10).max(16),
 	labelColor: Joi.string().min(10).max(16),