diff --git a/src/components/structures/RoomView.tsx b/src/components/structures/RoomView.tsx
index c9645515bf..1e3adcb518 100644
--- a/src/components/structures/RoomView.tsx
+++ b/src/components/structures/RoomView.tsx
@@ -25,6 +25,7 @@ import React, { createRef } from 'react';
 import classNames from 'classnames';
 import { Room } from "matrix-js-sdk/src/models/room";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
+import { SearchResult } from "matrix-js-sdk/src/models/search-result";
 import { EventSubscription } from "fbemitter";
 
 import shouldHideEvent from '../../shouldHideEvent';
@@ -142,7 +143,7 @@ export interface IState {
     searchResults?: XOR<{}, {
         count: number;
         highlights: string[];
-        results: MatrixEvent[];
+        results: SearchResult[];
         next_batch: string; // eslint-disable-line camelcase
     }>;
     searchHighlights?: string[];
diff --git a/src/components/views/messages/MVoiceMessageBody.tsx b/src/components/views/messages/MVoiceMessageBody.tsx
index d65de7697a..a7e3b1cd86 100644
--- a/src/components/views/messages/MVoiceMessageBody.tsx
+++ b/src/components/views/messages/MVoiceMessageBody.tsx
@@ -24,6 +24,7 @@ import {_t} from "../../../languageHandler";
 import {mediaFromContent} from "../../../customisations/Media";
 import {decryptFile} from "../../../utils/DecryptFile";
 import RecordingPlayback from "../voice_messages/RecordingPlayback";
+import {IMediaEventContent} from "../../../customisations/models/IMediaEventContent";
 
 interface IProps {
     mxEvent: MatrixEvent;
@@ -45,7 +46,7 @@ export default class MVoiceMessageBody extends React.PureComponent<IProps, IStat
 
     public async componentDidMount() {
         let buffer: ArrayBuffer;
-        const content = this.props.mxEvent.getContent();
+        const content: IMediaEventContent = this.props.mxEvent.getContent();
         const media = mediaFromContent(content);
         if (media.isEncrypted) {
             try {
diff --git a/src/components/views/settings/tabs/room/BridgeSettingsTab.tsx b/src/components/views/settings/tabs/room/BridgeSettingsTab.tsx
index 428c10b338..25dfe2f151 100644
--- a/src/components/views/settings/tabs/room/BridgeSettingsTab.tsx
+++ b/src/components/views/settings/tabs/room/BridgeSettingsTab.tsx
@@ -48,10 +48,7 @@ export default class BridgeSettingsTab extends React.Component<IProps> {
         const client = MatrixClientPeg.get();
         const roomState = client.getRoom(roomId).currentState;
 
-        return BRIDGE_EVENT_TYPES.map(typeName => {
-            const events = roomState.events.get(typeName);
-            return events ? Array.from(events.values()) : [];
-        }).flat(1);
+        return BRIDGE_EVENT_TYPES.map(typeName => roomState.getStateEvents(typeName)).flat(1);
     }
 
     render() {
diff --git a/src/hooks/useAccountData.ts b/src/hooks/useAccountData.ts
index fe71ed9ecd..0384b3bf77 100644
--- a/src/hooks/useAccountData.ts
+++ b/src/hooks/useAccountData.ts
@@ -21,11 +21,11 @@ import {Room} from "matrix-js-sdk/src/models/room";
 
 import {useEventEmitter} from "./useEventEmitter";
 
-const tryGetContent = (ev?: MatrixEvent) => ev ? ev.getContent() : undefined;
+const tryGetContent = <T extends {}>(ev?: MatrixEvent) => ev ? ev.getContent<T>() : undefined;
 
 // Hook to simplify listening to Matrix account data
 export const useAccountData = <T extends {}>(cli: MatrixClient, eventType: string) => {
-    const [value, setValue] = useState<T>(() => tryGetContent(cli.getAccountData(eventType)));
+    const [value, setValue] = useState<T>(() => tryGetContent<T>(cli.getAccountData(eventType)));
 
     const handler = useCallback((event) => {
         if (event.getType() !== eventType) return;
@@ -38,7 +38,7 @@ export const useAccountData = <T extends {}>(cli: MatrixClient, eventType: strin
 
 // Hook to simplify listening to Matrix room account data
 export const useRoomAccountData = <T extends {}>(room: Room, eventType: string) => {
-    const [value, setValue] = useState<T>(() => tryGetContent(room.getAccountData(eventType)));
+    const [value, setValue] = useState<T>(() => tryGetContent<T>(room.getAccountData(eventType)));
 
     const handler = useCallback((event) => {
         if (event.getType() !== eventType) return;
diff --git a/src/stores/widgets/StopGapWidgetDriver.ts b/src/stores/widgets/StopGapWidgetDriver.ts
index 9d477a38bf..5218e4a0bc 100644
--- a/src/stores/widgets/StopGapWidgetDriver.ts
+++ b/src/stores/widgets/StopGapWidgetDriver.ts
@@ -176,7 +176,7 @@ export class StopGapWidgetDriver extends WidgetDriver {
         if (!client || !roomId || !room) throw new Error("Not in a room or not attached to a client");
 
         const results: MatrixEvent[] = [];
-        const state = room.currentState.events.get(eventType);
+        const state: Map<string, MatrixEvent> = room.currentState.events.get(eventType);
         if (state) {
             if (stateKey === "" || !!stateKey) {
                 const forKey = state.get(stateKey);
diff --git a/src/utils/DMRoomMap.ts b/src/utils/DMRoomMap.ts
index 9214d22036..aceee1d0a5 100644
--- a/src/utils/DMRoomMap.ts
+++ b/src/utils/DMRoomMap.ts
@@ -36,7 +36,7 @@ export default class DMRoomMap {
     private roomToUser: {[key: string]: string} = null;
     private userToRooms: {[key: string]: string[]} = null;
     private hasSentOutPatchDirectAccountDataPatch: boolean;
-    private mDirectEvent: MatrixEvent;
+    private mDirectEvent: object;
 
     constructor(matrixClient) {
         this.matrixClient = matrixClient;
diff --git a/src/utils/WidgetUtils.ts b/src/utils/WidgetUtils.ts
index c67f3bad13..7ff0529363 100644
--- a/src/utils/WidgetUtils.ts
+++ b/src/utils/WidgetUtils.ts
@@ -392,7 +392,7 @@ export default class WidgetUtils {
         }
         const widgets = client.getAccountData('m.widgets');
         if (!widgets) return;
-        const userWidgets: IWidgetEvent[] = widgets.getContent() || {};
+        const userWidgets: Record<string, IWidgetEvent> = widgets.getContent() || {};
         Object.entries(userWidgets).forEach(([key, widget]) => {
             if (widget.content && widget.content.type === "m.integration_manager") {
                 delete userWidgets[key];