diff --git a/server/lean-toolchain b/server/lean-toolchain
index fd602c4..dc4c3b8 100644
--- a/server/lean-toolchain
+++ b/server/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2023-06-20
+leanprover/lean4:nightly-2023-08-03