diff --git a/versions.toml b/versions.toml
index bc53153..8497cb7 100644
--- a/versions.toml
+++ b/versions.toml
@@ -9,7 +9,7 @@ llvm_commit = "1b9c0d5ff9bbe7634aead059efe6b11a7eeba145"
 [rust.beta]
 # rust-lang/rust has no beta tags: beta is tracked by the `beta` branch head.
 tag = "1.100.0-beta"
-commit = "01ddda61fada79bbc835476209518a6f68322984"
+commit = "b0aaa0fca8a4b445972b94416341beb2e5fcecce"
 llvm_branch = "rustc/23.1-2026-07-22"
 llvm_commit = "0a5579eb649d3634a9c30ac873300cc2944fa070"