diff --git a/packages/string-templates/scripts/gen-collection-info.ts b/packages/string-templates/scripts/gen-collection-info.ts
index ffe9f68add..f34d54b2e1 100644
--- a/packages/string-templates/scripts/gen-collection-info.ts
+++ b/packages/string-templates/scripts/gen-collection-info.ts
@@ -33,7 +33,7 @@ const outputJSON: Manifest = {}
 const ADDED_HELPERS = {
   date: {
     date: {
-      args: ["datetime", "format", "options"],
+      args: ["datetime", "format", "[options]"],
       example: '{{date now "DD-MM-YYYY" "America/New_York" }} -> 21-01-2021',
       description:
         "Format a date using moment.js date formatting - the timezone is optional and uses the tz database.",
diff --git a/packages/string-templates/src/manifest.json b/packages/string-templates/src/manifest.json
index e47af7d69a..931700bf1d 100644
--- a/packages/string-templates/src/manifest.json
+++ b/packages/string-templates/src/manifest.json
@@ -1210,7 +1210,7 @@
       "args": [
         "datetime",
         "format",
-        "options"
+        "[options]"
       ],
       "example": "{{date now \"DD-MM-YYYY\" \"America/New_York\" }} -> 21-01-2021",
       "description": "<p>Format a date using moment.js date formatting - the timezone is optional and uses the tz database.</p>\n"