diff --git a/frontend/src/scripts/types/interfaces.ts b/frontend/src/scripts/types/interfaces.ts
index 93535602c..2c6f0d5be 100644
--- a/frontend/src/scripts/types/interfaces.ts
+++ b/frontend/src/scripts/types/interfaces.ts
@@ -157,6 +157,7 @@ export declare interface PersonalBests {
   };
   quote: { [quote: string]: PersonalBest[] };
   custom: { custom: PersonalBest[] };
+  zen: PersonalBest[];
 }
 
 export declare interface Tag {