diff --git a/lean-toolchain b/lean-toolchain
index 60a2f1865c..ace1dc1766 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2022-07-05
+leanprover/lean4:nightly-2022-07-09