diff --git a/src/store/DataStore.tsx b/src/store/DataStore.tsx
index 3e236b08..9af7e649 100644
--- a/src/store/DataStore.tsx
+++ b/src/store/DataStore.tsx
@@ -1,17 +1,21 @@
 import { create } from 'zustand'
 import { apiRequest } from '@/utils/api.ts'
 
+interface CollectionMap {
+  [key: string]: Collection
+}
+
 interface DataStoreType {
-  collections: Collection[]
+  collections: CollectionMap
   initCollection: (url: string) => Promise<Collection>
 }
 
 export const dataStore = create<DataStoreType>((set, get) => ({
-  collections: [],
+  collections: {},
   initCollection: async (url: string) => {
     const collection = await apiRequest<Collection>(url)
-    const collections: Collection[] = [ ...get().collections ]
-    collections.push(collection)
+    const collections: CollectionMap = { ...get().collections }
+    collections[collection.id] = collection
     set({ collections })
     return collection
   }