diff --git a/spec/unit/matrix-client.spec.ts b/spec/unit/matrix-client.spec.ts
index e77a3d5e8..404f7fcd7 100644
--- a/spec/unit/matrix-client.spec.ts
+++ b/spec/unit/matrix-client.spec.ts
@@ -28,7 +28,6 @@ import {
     UNSTABLE_MSC3088_ENABLED,
     UNSTABLE_MSC3088_PURPOSE,
     UNSTABLE_MSC3089_TREE_SUBTYPE,
-    MSC3912_RELATION_BASED_REDACTIONS_PROP,
 } from "../../src/@types/event";
 import { MEGOLM_ALGORITHM } from "../../src/crypto/olmlib";
 import { Crypto } from "../../src/crypto";
@@ -181,9 +180,7 @@ describe("MatrixClient", function () {
         data: SYNC_DATA,
     };
 
-    const unstableFeatures: Record<string, boolean> = {
-        "org.matrix.msc3440.stable": true,
-    };
+    let unstableFeatures: Record<string, boolean> = {};
 
     // items are popped off when processed and block if no items left.
     let httpLookups: HttpLookup[] = [];
@@ -342,6 +339,12 @@ describe("MatrixClient", function () {
         store.getClientOptions = jest.fn().mockReturnValue(Promise.resolve(null));
         store.storeClientOptions = jest.fn().mockReturnValue(Promise.resolve(null));
         store.isNewlyCreated = jest.fn().mockReturnValue(Promise.resolve(true));
+
+        // set unstableFeatures to a defined state before each test
+        unstableFeatures = {
+            "org.matrix.msc3440.stable": true,
+        };
+
         makeClient();
 
         // set reasonable working defaults
@@ -1373,10 +1376,10 @@ describe("MatrixClient", function () {
             await client.redactEvent(roomId, eventId, txnId, { reason });
         });
 
-        describe("when calling with with_relations", () => {
+        describe("when calling with 'with_rel_types'", () => {
             const eventId = "$event42:example.org";
 
-            it("should raise an error if server has no support for relation based redactions", async () => {
+            it("should raise an error if the server has no support for relation based redactions", async () => {
                 // load supported features
                 await client.getVersions();
 
@@ -1384,7 +1387,7 @@ describe("MatrixClient", function () {
 
                 expect(() => {
                     client.redactEvent(roomId, eventId, txnId, {
-                        with_relations: [RelationType.Reference],
+                        with_rel_types: [RelationType.Reference],
                     });
                 }).toThrow(
                     new Error(
@@ -1394,34 +1397,30 @@ describe("MatrixClient", function () {
                 );
             });
 
-            describe("and the server supports relation based redactions (unstable)", () => {
-                beforeEach(async () => {
-                    unstableFeatures["org.matrix.msc3912"] = true;
-                    // load supported features
-                    await client.getVersions();
-                });
+            it("and the server has unstable support for relation based redactions, it should send 'org.matrix.msc3912.with_relations' in the request body", async () => {
+                unstableFeatures["org.matrix.msc3912"] = true;
+                // load supported features
+                await client.getVersions();
 
-                it("should send with_relations in the request body", async () => {
-                    const txnId = client.makeTxnId();
+                const txnId = client.makeTxnId();
 
-                    httpLookups = [
-                        {
-                            method: "PUT",
-                            path:
-                                `/rooms/${encodeURIComponent(roomId)}/redact/${encodeURIComponent(eventId)}` +
-                                `/${encodeURIComponent(txnId)}`,
-                            expectBody: {
-                                reason: "redaction test",
-                                [MSC3912_RELATION_BASED_REDACTIONS_PROP.unstable!]: [RelationType.Reference],
-                            },
-                            data: { event_id: eventId },
+                httpLookups = [
+                    {
+                        method: "PUT",
+                        path:
+                            `/rooms/${encodeURIComponent(roomId)}/redact/${encodeURIComponent(eventId)}` +
+                            `/${encodeURIComponent(txnId)}`,
+                        expectBody: {
+                            reason: "redaction test",
+                            ["org.matrix.msc3912.with_relations"]: ["m.reference"],
                         },
-                    ];
+                        data: { event_id: eventId },
+                    },
+                ];
 
-                    await client.redactEvent(roomId, eventId, txnId, {
-                        reason: "redaction test",
-                        with_relations: [RelationType.Reference],
-                    });
+                await client.redactEvent(roomId, eventId, txnId, {
+                    reason: "redaction test",
+                    with_rel_types: [RelationType.Reference],
                 });
             });
         });
diff --git a/src/@types/event.ts b/src/@types/event.ts
index a0eca5cc0..14b5b6402 100644
--- a/src/@types/event.ts
+++ b/src/@types/event.ts
@@ -168,11 +168,11 @@ export const UNSTABLE_MSC3089_BRANCH = new UnstableValue("m.branch", "org.matrix
 export const UNSTABLE_MSC2716_MARKER = new UnstableValue("m.room.marker", "org.matrix.msc2716.marker");
 
 /**
- * Name of the "with_relations" request property for relation based redactions.
+ * Name of the request property for relation based redactions.
  * {@link https://github.com/matrix-org/matrix-spec-proposals/pull/3912}
  */
 export const MSC3912_RELATION_BASED_REDACTIONS_PROP = new UnstableValue(
-    "with_relations",
+    "with_rel_types",
     "org.matrix.msc3912.with_relations",
 );
 
diff --git a/src/@types/requests.ts b/src/@types/requests.ts
index 364b9f12c..f5b0efbea 100644
--- a/src/@types/requests.ts
+++ b/src/@types/requests.ts
@@ -48,17 +48,16 @@ export interface IJoinRoomOpts {
 export interface IRedactOpts {
     reason?: string;
     /**
-     * Whether events related to the redacted event should be redacted.
-     *
      * If specified, then any events which relate to the event being redacted with
      * any of the relationship types listed will also be redacted.
+     * Provide a "*" list item to tell the server to redact relations of any type.
      *
      * <b>Raises an Error if the server does not support it.</b>
      * Check for server-side support before using this param with
      * <code>client.canSupport.get(Feature.RelationBasedRedactions)</code>.
      * {@link https://github.com/matrix-org/matrix-spec-proposals/pull/3912}
      */
-    with_relations?: Array<RelationType | string>;
+    with_rel_types?: Array<RelationType | "*">;
 }
 
 export interface ISendEventResponse {
diff --git a/src/client.ts b/src/client.ts
index 3877cb713..d7abcdae9 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -4593,10 +4593,10 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
 
     /**
      * @param txnId -  transaction id. One will be made up if not supplied.
-     * @param opts - Options to pass on, may contain `reason` and `with_relations` (MSC3912)
+     * @param opts - Redact options
      * @returns Promise which resolves: TODO
      * @returns Rejects: with an error response.
-     * @throws Error if called with `with_relations` (MSC3912) but the server does not support it.
+     * @throws Error if called with `with_rel_types` (MSC3912) but the server does not support it.
      *         Callers should check whether the server supports MSC3912 via `MatrixClient.canSupport`.
      */
     public redactEvent(
@@ -4626,34 +4626,30 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
             threadId = null;
         }
         const reason = opts?.reason;
+        const content: IContent = { reason };
 
-        if (
-            opts?.with_relations &&
-            this.canSupport.get(Feature.RelationBasedRedactions) === ServerSupport.Unsupported
-        ) {
-            throw new Error(
-                "Server does not support relation based redactions " +
-                    `roomId ${roomId} eventId ${eventId} txnId: ${txnId} threadId ${threadId}`,
-            );
+        if (opts?.with_rel_types !== undefined) {
+            if (this.canSupport.get(Feature.RelationBasedRedactions) === ServerSupport.Unsupported) {
+                throw new Error(
+                    "Server does not support relation based redactions " +
+                        `roomId ${roomId} eventId ${eventId} txnId: ${txnId} threadId ${threadId}`,
+                );
+            }
+
+            const withRelTypesPropName =
+                this.canSupport.get(Feature.RelationBasedRedactions) === ServerSupport.Stable
+                    ? MSC3912_RELATION_BASED_REDACTIONS_PROP.stable!
+                    : MSC3912_RELATION_BASED_REDACTIONS_PROP.unstable!;
+
+            content[withRelTypesPropName] = opts.with_rel_types;
         }
 
-        const withRelations = opts?.with_relations
-            ? {
-                  [this.canSupport.get(Feature.RelationBasedRedactions) === ServerSupport.Stable
-                      ? MSC3912_RELATION_BASED_REDACTIONS_PROP.stable!
-                      : MSC3912_RELATION_BASED_REDACTIONS_PROP.unstable!]: opts?.with_relations,
-              }
-            : {};
-
         return this.sendCompleteEvent(
             roomId,
             threadId,
             {
                 type: EventType.RoomRedaction,
-                content: {
-                    ...withRelations,
-                    reason,
-                },
+                content,
                 redacts: eventId,
             },
             txnId as string,