diff --git a/lean-toolchain b/lean-toolchain
index 80611d83b2..bb7c2e15f3 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2024-11-19
+leanprover/lean4-pr-releases:pr-release-6188