diff --git a/apps/web/src/stores/widgets/ElementWidgetDriver.ts b/apps/web/src/stores/widgets/ElementWidgetDriver.ts
index 157991e860..23ab7cc511 100644
--- a/apps/web/src/stores/widgets/ElementWidgetDriver.ts
+++ b/apps/web/src/stores/widgets/ElementWidgetDriver.ts
@@ -128,6 +128,7 @@ export class ElementWidgetDriver extends WidgetDriver {
             this.allowedCapabilities.add(MatrixCapabilities.MSC4157UpdateDelayedEvent);
             this.allowedCapabilities.add(MatrixCapabilities.MSC4407SendStickyEvent);
             this.allowedCapabilities.add(MatrixCapabilities.MSC4407ReceiveStickyEvent);
+            this.allowedCapabilities.add(MatrixCapabilities.MSC4039DownloadFile);
 
             this.allowedCapabilities.add(
                 WidgetEventCapability.forStateEvent(EventDirection.Receive, EventType.RoomName).raw,
diff --git a/apps/web/test/unit-tests/stores/widgets/ElementWidgetDriver-test.ts b/apps/web/test/unit-tests/stores/widgets/ElementWidgetDriver-test.ts
index b658aa68d4..2e86fd196c 100644
--- a/apps/web/test/unit-tests/stores/widgets/ElementWidgetDriver-test.ts
+++ b/apps/web/test/unit-tests/stores/widgets/ElementWidgetDriver-test.ts
@@ -134,6 +134,7 @@ describe("ElementWidgetDriver", () => {
             "org.matrix.msc4157.update_delayed_event",
             "org.matrix.msc4407.send.sticky_event",
             "org.matrix.msc4407.receive.sticky_event",
+            "org.matrix.msc4039.download_file",
             // RTC decline events (send/receive, unstable/stable)
             "org.matrix.msc2762.send.event:org.matrix.msc4310.rtc.decline",
             "org.matrix.msc2762.send.event:m.rtc.decline",