diff --git a/lean-toolchain b/lean-toolchain
index 400394aaf2..dd34b49866 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.2.0-rc1
+leanprover/lean4-pr-releases:pr-release-2679