diff --git a/lean-toolchain b/lean-toolchain
index 14a4424..1d4c9d4 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.23.0
\ No newline at end of file
+leanprover/lean4:v4.25.0
\ No newline at end of file