diff --git a/src/tools/miri/rust-version b/src/tools/miri/rust-version
index 45b3546a09b4..2d7b6a650aef 100644
--- a/src/tools/miri/rust-version
+++ b/src/tools/miri/rust-version
@@ -1 +1 @@
-1f76d219c906f0112bb1872f33aa977164c53fa6
+2ef78586529b5f68cc42bcbe9b10b4afe56a942a