diff --git a/server/lean-toolchain b/server/lean-toolchain
index f0a6d66..f8f5f5c 100644
--- a/server/lean-toolchain
+++ b/server/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.0.0
+leanprover/lean4:v4.1.0