From 8bccb92b531248af1b6692d65486e8640c8bcd10 Mon Sep 17 00:00:00 2001
From: Scott Morrison <scott.morrison@gmail.com>
Date: Sun, 22 Oct 2023 09:25:36 +1100
Subject: [PATCH] chore: bump lean-toolchain to v4.2.0-rc4

Fixes a potential data loss bug. All projects should update their toolchain as soon as possible.

Please see https://github.com/leanprover/lean4/releases/tag/v4.2.0-rc4
and the [zulip thread](https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/Potential.20data.20loss.20from.20.60lake.20clean.60.20with.204.2E2.2E0-rc2.2F3/near/397875701) for more information.
---
 lean-toolchain | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lean-toolchain b/lean-toolchain
index a61d282..183a307 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.2.0-rc3
+leanprover/lean4:v4.2.0-rc4