diff --git a/functions/src/memberCache/memberCache.ts b/functions/src/memberCache/memberCache.ts
index 2c295c4..95cdd2e 100644
--- a/functions/src/memberCache/memberCache.ts
+++ b/functions/src/memberCache/memberCache.ts
@@ -30,11 +30,6 @@ interface ClientFields {
   [key: string]: any;
 }
 
-interface PaymentData {
-  dateTimestamp?: admin.firestore.Timestamp;
-  [key: string]: any;
-}
-
 interface MinimalCacheEntry {
   membershipId: string;
   userId: string;