From 0ac044715b83818446ed78db8f985e69a28961be Mon Sep 17 00:00:00 2001
From: github-merge-queue
 <118344674+github-merge-queue@users.noreply.github.com>
Date: Tue, 20 Jan 2026 09:58:27 +0000
Subject: [PATCH] [create-pull-request] automated change

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

diff --git a/lean-toolchain b/lean-toolchain
index 385b58a..3b22be1 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-01-16
+leanprover/lean4:nightly-2026-01-20