diff --git a/src/tools/miri/rust-version b/src/tools/miri/rust-version
index 2cc690989d1..da89b71ccd5 100644
--- a/src/tools/miri/rust-version
+++ b/src/tools/miri/rust-version
@@ -1 +1 @@
-ec362f0ae8a05618b75727cfdca853540cb2950e
+0646a5d1aa3745cb448db247f6fa432890a1812b