diff --git a/app/models/cache.ts b/app/models/cache.ts
index 5bd23cd..86dc3f9 100644
--- a/app/models/cache.ts
+++ b/app/models/cache.ts
@@ -2,16 +2,12 @@ import { Album, Playlist, Artist, Song } from './library'
 
 export enum CacheItemType {
   coverArt = 'coverArt',
-  coverArtThumb = 'coverArtThumb',
   artistArt = 'artistArt',
-  artistArtThumb = 'artistArtThumb',
   song = 'song',
 }
 
 export type CacheItemTypeKey = keyof typeof CacheItemType
 
-export type CacheImageSize = 'thumbnail' | 'original'
-
 export type CacheFile = {
   path: string
   date: number
diff --git a/app/state/cache.ts b/app/state/cache.ts
index 430cc54..821060d 100644
--- a/app/state/cache.ts
+++ b/app/state/cache.ts
@@ -1,4 +1,4 @@
-import { CacheFile, CacheImageSize, CacheItemType, CacheItemTypeKey, CacheRequest } from '@app/models/cache'
+import { CacheFile, CacheItemType, CacheItemTypeKey, CacheRequest } from '@app/models/cache'
 import { mkdir, rmdir } from '@app/util/fs'
 import PromiseQueue from '@app/util/PromiseQueue'
 import produce from 'immer'
@@ -8,9 +8,7 @@ import { Store } from './store'
 
 const queues: Record<CacheItemTypeKey, PromiseQueue> = {
   coverArt: new PromiseQueue(5),
-  coverArtThumb: new PromiseQueue(50),
   artistArt: new PromiseQueue(5),
-  artistArtThumb: new PromiseQueue(50),
   song: new PromiseQueue(1),
 }
 
@@ -32,7 +30,7 @@ export type CacheSlice = {
   cacheFiles: CacheFilesByServer
   cacheRequests: CacheRequestsByServer
 
-  fetchCoverArtFilePath: (coverArt: string, size?: CacheImageSize) => Promise<string | undefined>
+  fetchCoverArtFilePath: (coverArt: string) => Promise<string | undefined>
 
   createCache: (serverId: string) => Promise<void>
   prepareCache: (serverId: string) => void
@@ -136,7 +134,7 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
     return await promise
   },
 
-  fetchCoverArtFilePath: async (coverArt, size = 'thumbnail') => {
+  fetchCoverArtFilePath: async coverArt => {
     const client = get().client
     if (!client) {
       return
@@ -147,7 +145,7 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
       return
     }
 
-    const key: CacheItemTypeKey = size === 'thumbnail' ? 'coverArtThumb' : 'coverArt'
+    const key: CacheItemTypeKey = 'coverArt'
 
     const existing = get().cacheFiles[activeServerId][key][coverArt]
     const inProgress = get().cacheRequests[activeServerId][key][coverArt]
@@ -158,12 +156,7 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
       return `file://${existing.path}`
     }
 
-    await get().cacheItem(key, coverArt, () =>
-      client.getCoverArtUri({
-        id: coverArt,
-        size: size === 'thumbnail' ? '256' : undefined,
-      }),
-    )
+    await get().cacheItem(key, coverArt, () => client.getCoverArtUri({ id: coverArt }))
 
     return `file://${get().cacheFiles[activeServerId][key][coverArt].path}`
   },
@@ -178,9 +171,7 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
         state.cacheFiles[serverId] = {
           song: {},
           coverArt: {},
-          coverArtThumb: {},
           artistArt: {},
-          artistArtThumb: {},
         }
       }),
     )
@@ -195,18 +186,14 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
           state.cacheDirs[serverId] = {
             song: `${RNFS.DocumentDirectoryPath}/servers/${serverId}/song`,
             coverArt: `${RNFS.DocumentDirectoryPath}/servers/${serverId}/coverArt`,
-            coverArtThumb: `${RNFS.DocumentDirectoryPath}/servers/${serverId}/coverArtThumb`,
             artistArt: `${RNFS.DocumentDirectoryPath}/servers/${serverId}/artistArt`,
-            artistArtThumb: `${RNFS.DocumentDirectoryPath}/servers/${serverId}/artistArtThumb`,
           }
         }
         if (!state.cacheRequests[serverId]) {
           state.cacheRequests[serverId] = {
             song: {},
             coverArt: {},
-            coverArtThumb: {},
             artistArt: {},
-            artistArtThumb: {},
           }
         }
       }),
@@ -273,9 +260,7 @@ export const createCacheSlice = (set: SetState<Store>, get: GetState<Store>): Ca
       set(
         produce<CacheSlice>(state => {
           state.cacheFiles[serverId].coverArt = {}
-          state.cacheFiles[serverId].coverArtThumb = {}
           state.cacheFiles[serverId].artistArt = {}
-          state.cacheFiles[serverId].artistArtThumb = {}
         }),
       )
     }
diff --git a/app/state/library.ts b/app/state/library.ts
index ac4c0e9..496e8d9 100644
--- a/app/state/library.ts
+++ b/app/state/library.ts
@@ -23,7 +23,7 @@ import {
   SubsonicResponse,
 } from '@app/subsonic/responses'
 import PromiseQueue from '@app/util/PromiseQueue'
-import { reduceById, mergeById } from '@app/util/state'
+import { reduceById, mergeById, mapId } from '@app/util/state'
 import produce from 'immer'
 import { WritableDraft } from 'immer/dist/types/types-external'
 import pick from 'lodash.pick'
@@ -547,7 +547,3 @@ function mapSong(song: ChildElement): Song {
     starred: song.starred,
   }
 }
-
-function mapId(entities: { id: string }[]): string[] {
-  return entities.map(e => e.id)
-}
diff --git a/app/state/migrations.ts b/app/state/migrations.ts
index 07c08d5..4f9c841 100644
--- a/app/state/migrations.ts
+++ b/app/state/migrations.ts
@@ -1,9 +1,26 @@
-const migrations: Array<(state: any) => any> = [
-  state => {
-    for (let server of state.settings.servers) {
+import { Store } from './store'
+import RNFS from 'react-native-fs'
+import { rmdir } from '@app/util/fs'
+
+const migrations: Array<(state: any) => Promise<any>> = [
+  async state => {
+    for (const server of state.settings.servers) {
       server.usePlainPassword = false
     }
 
+    return state
+  },
+  async state => {
+    const store = state as Store
+    const keysToDelete = ['coverArtThumb', 'artistArtThumb']
+
+    for (const serverId in store.cacheDirs) {
+      for (const key in keysToDelete) {
+        await rmdir(`${RNFS.DocumentDirectoryPath}/servers/${serverId}/${key}`)
+        delete state.cacheFiles[serverId][key]
+      }
+    }
+
     return state
   },
 ]
diff --git a/app/state/store.ts b/app/state/store.ts
index 20be9ac..99ccda0 100644
--- a/app/state/store.ts
+++ b/app/state/store.ts
@@ -50,13 +50,13 @@ export const useStore = create<
             postState?.setHydrated(true)
           }
         },
-        migrate: (persistedState, version) => {
+        migrate: async (persistedState, version) => {
           if (version > DB_VERSION) {
             throw new Error('cannot migrate db on a downgrade, delete all data first')
           }
 
           for (let i = version; i < DB_VERSION; i++) {
-            persistedState = migrations[i](persistedState)
+            persistedState = await migrations[i](persistedState)
           }
 
           return persistedState
diff --git a/app/util/state.ts b/app/util/state.ts
index 379e5f6..6c3fdbd 100644
--- a/app/util/state.ts
+++ b/app/util/state.ts
@@ -15,3 +15,7 @@ export function mergeById<T extends { [id: string]: unknown }>(object: T, source
 export function mapById<T>(object: ById<T>, ids: string[]): T[] {
   return ids.map(id => object[id]).filter(a => a !== undefined)
 }
+
+export function mapId(entities: { id: string }[]): string[] {
+  return entities.map(e => e.id)
+}