diff --git a/client.go b/client.go
index a6d89338..e6757d67 100644
--- a/client.go
+++ b/client.go
@@ -1225,7 +1225,7 @@ func (cli *Client) SendMassagedStateEvent(ctx context.Context, roomID id.RoomID,
 
 func (cli *Client) UpdateDelayedEvent(ctx context.Context, req *ReqUpdateDelayedEvent) (resp *RespUpdateDelayedEvent, err error) {
 	urlPath := cli.BuildClientURL("unstable", "org.matrix.msc4140", "delayed_events", req.DelayID)
-	_, err = cli.MakeRequest(ctx, http.MethodPut, urlPath, req, &resp)
+	_, err = cli.MakeRequest(ctx, http.MethodPost, urlPath, req, &resp)
 	return
 }