diff --git a/src/matrix/storage/idb/Store.ts b/src/matrix/storage/idb/Store.ts
index 8063a4c8..e2da0707 100644
--- a/src/matrix/storage/idb/Store.ts
+++ b/src/matrix/storage/idb/Store.ts
@@ -148,7 +148,7 @@ export class Store<T> extends QueryTarget<T> {
         return new QueryTarget<T>(new QueryTargetWrapper<T>(this._idbStore.index(indexName)));
     }
 
-    put(value: T): Promise<IDBValidKey> {
+    put(value: T): void {
         // If this request fails, the error will bubble up to the transaction and abort it,
         // which is the behaviour we want. Therefore, it is ok to not create a promise for this
         // request and await it.
@@ -159,12 +159,12 @@ export class Store<T> extends QueryTarget<T> {
         // 
         // Note that this can still throw synchronously, like it does for TransactionInactiveError,
         // see https://www.w3.org/TR/IndexedDB-2/#transaction-lifetime-concept
-        return reqAsPromise(this._idbStore.put(value));
+        this._idbStore.put(value);
     }
 
-    add(value: T): Promise<IDBValidKey> {
+    add(value: T): void {
         // ok to not monitor result of request, see comment in `put`.
-        return reqAsPromise(this._idbStore.add(value));
+        this._idbStore.add(value);
     }
 
     delete(keyOrKeyRange: IDBValidKey | IDBKeyRange): Promise<undefined> {
diff --git a/src/matrix/storage/idb/schema.js b/src/matrix/storage/idb/schema.js
index f5472107..50e298d7 100644
--- a/src/matrix/storage/idb/schema.js
+++ b/src/matrix/storage/idb/schema.js
@@ -4,7 +4,7 @@ import {addRoomToIdentity} from "../../e2ee/DeviceTracker.js";
 import {RoomMemberStore} from "./stores/RoomMemberStore";
 import {SessionStore} from "./stores/SessionStore";
 import {encodeScopeTypeKey} from "./stores/OperationStore.js";
-import {MAX_UNICODE} from "./stores/common.js";
+import {MAX_UNICODE} from "./stores/common";
 
 // FUNCTIONS SHOULD ONLY BE APPENDED!!
 // the index in the array is the database version
diff --git a/src/matrix/storage/idb/stores/InviteStore.ts b/src/matrix/storage/idb/stores/InviteStore.ts
index f8841a71..7616ebf7 100644
--- a/src/matrix/storage/idb/stores/InviteStore.ts
+++ b/src/matrix/storage/idb/stores/InviteStore.ts
@@ -41,8 +41,8 @@ export class InviteStore {
         return this._inviteStore.selectAll();
     }
 
-    set(invite: InviteData): Promise<IDBValidKey> {
-        return this._inviteStore.put(invite);
+    set(invite: InviteData): void {
+        this._inviteStore.put(invite);
     }
 
     remove(roomId: string): void {
diff --git a/src/matrix/storage/idb/stores/RoomMemberStore.ts b/src/matrix/storage/idb/stores/RoomMemberStore.ts
index 6abd897f..e389bb77 100644
--- a/src/matrix/storage/idb/stores/RoomMemberStore.ts
+++ b/src/matrix/storage/idb/stores/RoomMemberStore.ts
@@ -50,10 +50,10 @@ export class RoomMemberStore {
         return this._roomMembersStore.get(encodeKey(roomId, userId));
     }
 
-    async set(member: MemberData): Promise<IDBValidKey> {
+    set(member: MemberData): void {
         // Object.assign would be more typesafe, but small objects 
         (member as any).key = encodeKey(member.roomId, member.userId);
-        return this._roomMembersStore.put(member as MemberStorageEntry);
+        this._roomMembersStore.put(member as MemberStorageEntry);
     }
 
     getAll(roomId: string): Promise<MemberData[]> {
diff --git a/src/matrix/storage/idb/stores/RoomSummaryStore.ts b/src/matrix/storage/idb/stores/RoomSummaryStore.ts
index 19e847b1..bd911572 100644
--- a/src/matrix/storage/idb/stores/RoomSummaryStore.ts
+++ b/src/matrix/storage/idb/stores/RoomSummaryStore.ts
@@ -42,8 +42,8 @@ export class RoomSummaryStore {
         return this._summaryStore.selectAll();
     }
 
-    set(summary: SummaryData): Promise<IDBValidKey> {
-        return this._summaryStore.put(summary);
+    set(summary: SummaryData): void {
+        this._summaryStore.put(summary);
     }
 
     get(roomId: string): Promise<SummaryData | null> {
diff --git a/src/matrix/storage/idb/stores/SessionStore.ts b/src/matrix/storage/idb/stores/SessionStore.ts
index 4dc467fe..859d3319 100644
--- a/src/matrix/storage/idb/stores/SessionStore.ts
+++ b/src/matrix/storage/idb/stores/SessionStore.ts
@@ -27,7 +27,7 @@ export class SessionStore {
         this._sessionStore = sessionStore;
     }
 
-    async get(key: IDBValidKey): Promise<any> {
+    async get(key: string): Promise<any> {
         const entry = await this._sessionStore.get(key);
         if (entry) {
             return entry.value;
@@ -42,7 +42,7 @@ export class SessionStore {
         this._sessionStore.add({key, value});
     }
 
-    remove(key: IDBValidKey): void {
+    remove(key: string): void {
         this._sessionStore.delete(key);
     }
 }
diff --git a/src/matrix/storage/idb/stores/TimelineRelationStore.ts b/src/matrix/storage/idb/stores/TimelineRelationStore.ts
index 0905eb0c..6772864a 100644
--- a/src/matrix/storage/idb/stores/TimelineRelationStore.ts
+++ b/src/matrix/storage/idb/stores/TimelineRelationStore.ts
@@ -39,8 +39,8 @@ export class TimelineRelationStore {
         this._store = store;
     }
 
-    add(roomId: string, targetEventId: string, relType: string, sourceEventId: string): Promise<IDBValidKey> {
-        return this._store.add({key: encodeKey(roomId, targetEventId, relType, sourceEventId)});
+    add(roomId: string, targetEventId: string, relType: string, sourceEventId: string): void {
+        this._store.add({key: encodeKey(roomId, targetEventId, relType, sourceEventId)});
     }
 
     remove(roomId: string, targetEventId: string, relType: string, sourceEventId: string): Promise<undefined> {