diff --git a/package.json b/package.json
index fde34b7..c69d954 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ics",
-  "version": "2.39.0",
+  "version": "2.40.0",
   "description": "iCal (ics) file generator",
   "exports": {
     "require": "./index.js",
diff --git a/src/schema/index.js b/src/schema/index.js
index 19a4f65..4c5e35c 100644
--- a/src/schema/index.js
+++ b/src/schema/index.js
@@ -39,7 +39,8 @@ const contactSchema = yup.object().shape({
 
 const organizerSchema = yup.object().shape({
   name: yup.string(),
-  email: yup.string().email()
+  email: yup.string().email(),
+  dir: yup.string()
 }).noUnknown()
 
 const alarmSchema = yup.object().shape({