diff --git a/lean-toolchain b/lean-toolchain
index 7cd7ead2e..3bfd46501 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-08-19
+leanprover/lean4-pr-releases:pr-release-14935-6b54eee