From 5f3e3d595073af3502d37bf1d9a3d02da4e0c5b8 Mon Sep 17 00:00:00 2001
From: Kim Morrison <kim@tqft.net>
Date: Mon, 26 Jan 2026 13:40:03 +1100
Subject: [PATCH] chore: bump toolchain to v4.28.0-rc1

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

diff --git a/lean-toolchain b/lean-toolchain
index 5249182..4bafde2 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.27.0
+leanprover/lean4:v4.28.0-rc1