From 17279730c328289148456be3cb7f0a32ffea33a1 Mon Sep 17 00:00:00 2001
From: Kim Morrison <kim@tqft.net>
Date: Thu, 24 Jul 2025 13:48:38 +1000
Subject: [PATCH] bump toolchain to v4.22.0-rc4

---
 lean-toolchain | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lean-toolchain b/lean-toolchain
index fff0a20c4..2c6e1c4ba 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.22.0-rc3
+leanprover/lean4:v4.22.0-rc4