diff --git a/user/advanced-topics/rpc-policy.md b/user/advanced-topics/rpc-policy.md
index d86ab1ac..1c65a6e2 100644
--- a/user/advanced-topics/rpc-policy.md
+++ b/user/advanced-topics/rpc-policy.md
@@ -6,6 +6,8 @@ ref: 178
 title: RPC policies
 ---
 
+:warning: *Qubes OS 4.1 introduced a new qrexec policy system and policy format; please see [this article](https://www.qubes-os.org/news/2020/06/22/new-qrexec-policy-system/) for more details.*
+
 This document explains the basics of RPC policies in Qubes.
 For more information, see [Qrexec: command execution in VMs](/doc/qrexec3/).