diff --git a/src/openapi/schemas/content.yaml b/src/openapi/schemas/content.yaml
index 48f18ab..e1b2a08 100644
--- a/src/openapi/schemas/content.yaml
+++ b/src/openapi/schemas/content.yaml
@@ -197,6 +197,7 @@ components:
           $ref: "#/components/schemas/ContentItemType" # TimelineTweet
         tweetDisplayType:
           type: string
+          enum: [Tweet, SelfThread, MediaGrid, CondensedTweet]
         tweet_results:
           $ref: "#/components/schemas/ItemResult"
         socialContext: