diff --git a/src/tools/miri/rust-version b/src/tools/miri/rust-version
index 30123b92f6c..d96e7040aaf 100644
--- a/src/tools/miri/rust-version
+++ b/src/tools/miri/rust-version
@@ -1 +1 @@
-656ee47db32e882fb02913f6204e09cc7a41a50e
+c40cfcf0494ff7506e753e750adb00eeea839f9c