diff --git a/src/components/views/rooms/RoomHeader/CallGuestLinkButton.tsx b/src/components/views/rooms/RoomHeader/CallGuestLinkButton.tsx
index c5efe10e0f..fcc269bede 100644
--- a/src/components/views/rooms/RoomHeader/CallGuestLinkButton.tsx
+++ b/src/components/views/rooms/RoomHeader/CallGuestLinkButton.tsx
@@ -17,7 +17,7 @@ import { Icon as ExternalLinkIcon } from "@vector-im/compound-design-tokens/icon
 import { Button, IconButton, Tooltip } from "@vector-im/compound-web";
 import React, { useCallback } from "react";
 import { logger } from "matrix-js-sdk/src/logger";
-import { EventType, IJoinRuleEventContent, JoinRule, Room } from "matrix-js-sdk/src/matrix";
+import { EventType, JoinRule, Room } from "matrix-js-sdk/src/matrix";
 
 import Modal from "../../../../Modal";
 import ShareDialog from "../../dialogs/ShareDialog";
@@ -118,7 +118,7 @@ export const JoinRuleDialog: React.FC<{
                 EventType.RoomJoinRules,
                 {
                     join_rule: newRule,
-                } as IJoinRuleEventContent,
+                },
                 "",
             );
             // Show the dialog for a bit to give the user feedback
diff --git a/src/components/views/rooms/RoomPreviewBar.tsx b/src/components/views/rooms/RoomPreviewBar.tsx
index bbb3154f12..472cb4e4eb 100644
--- a/src/components/views/rooms/RoomPreviewBar.tsx
+++ b/src/components/views/rooms/RoomPreviewBar.tsx
@@ -15,16 +15,8 @@ limitations under the License.
 */
 
 import React, { ChangeEvent, ReactNode } from "react";
-import {
-    Room,
-    RoomMember,
-    EventType,
-    RoomType,
-    IJoinRuleEventContent,
-    JoinRule,
-    MatrixError,
-} from "matrix-js-sdk/src/matrix";
-import { KnownMembership } from "matrix-js-sdk/src/types";
+import { Room, RoomMember, EventType, RoomType, JoinRule, MatrixError } from "matrix-js-sdk/src/matrix";
+import { KnownMembership, RoomJoinRulesEventContent } from "matrix-js-sdk/src/types";
 import classNames from "classnames";
 import { RoomPreviewOpts, RoomViewLifecycle } from "@matrix-org/react-sdk-module-api/lib/lifecycles/RoomViewLifecycle";
 
@@ -257,7 +249,7 @@ export default class RoomPreviewBar extends React.Component<IProps, IState> {
         return (
             this.props.room?.currentState
                 .getStateEvents(EventType.RoomJoinRules, "")
-                ?.getContent<IJoinRuleEventContent>().join_rule ?? null
+                ?.getContent<RoomJoinRulesEventContent>().join_rule ?? null
         );
     }
 
diff --git a/src/components/views/settings/JoinRuleSettings.tsx b/src/components/views/settings/JoinRuleSettings.tsx
index 9f4bceb02a..0d7cac30d7 100644
--- a/src/components/views/settings/JoinRuleSettings.tsx
+++ b/src/components/views/settings/JoinRuleSettings.tsx
@@ -15,14 +15,8 @@ limitations under the License.
 */
 
 import React, { ReactNode, useEffect, useState } from "react";
-import {
-    IJoinRuleEventContent,
-    JoinRule,
-    RestrictedAllowType,
-    Room,
-    EventType,
-    Visibility,
-} from "matrix-js-sdk/src/matrix";
+import { JoinRule, RestrictedAllowType, Room, EventType, Visibility } from "matrix-js-sdk/src/matrix";
+import { RoomJoinRulesEventContent } from "matrix-js-sdk/src/types";
 
 import StyledRadioGroup, { IDefinition } from "../elements/StyledRadioGroup";
 import { _t } from "../../../languageHandler";
@@ -72,7 +66,7 @@ const JoinRuleSettings: React.FC<JoinRuleSettingsProps> = ({
 
     const disabled = !room.currentState.mayClientSendStateEvent(EventType.RoomJoinRules, cli);
 
-    const [content, setContent] = useLocalEcho<IJoinRuleEventContent | undefined, IJoinRuleEventContent>(
+    const [content, setContent] = useLocalEcho<RoomJoinRulesEventContent | undefined, RoomJoinRulesEventContent>(
         () => room.currentState.getStateEvents(EventType.RoomJoinRules, "")?.getContent(),
         (content) => cli.sendStateEvent(room.roomId, EventType.RoomJoinRules, content, ""),
         onError,
@@ -391,7 +385,7 @@ const JoinRuleSettings: React.FC<JoinRuleSettingsProps> = ({
         if (beforeJoinRule === joinRule && !restrictedAllowRoomIds) return;
         if (beforeChange && !(await beforeChange(joinRule))) return;
 
-        const newContent: IJoinRuleEventContent = {
+        const newContent: RoomJoinRulesEventContent = {
             join_rule: joinRule,
         };