diff --git a/lean-toolchain b/lean-toolchain
index 7bc9ac5..bf1629e 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.3.0-rc2
\ No newline at end of file
+leanprover/lean4:v4.4.0-rc1
\ No newline at end of file