diff --git a/lean-toolchain b/lean-toolchain
index 2d7b40ae05..f58ddcd1d9 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2024-04-17
+leanprover/lean4-pr-releases:pr-release-3940