From 2eb667014c23bc15fab2fac7c480964da3e17900 Mon Sep 17 00:00:00 2001
From: Tobias Grosser <tobias@grosser.es>
Date: Sun, 3 Aug 2025 05:03:38 +0000
Subject: [PATCH] try PR9643 - 'perf: MatchEqs.simpH: do not use contradiction'

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

diff --git a/lean-toolchain b/lean-toolchain
index fe8c08a7..d0fec2ad 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2025-07-10
\ No newline at end of file
+leanprover/lean4-pr-releases:pr-release-9643