diff --git a/WORKSPACE b/WORKSPACE
index c85b9d5b65e..f1e59156751 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -222,8 +222,8 @@ load("@rules_rust//rust:repositories.bzl", "rules_rust_dependencies", "rust_regi
 rules_rust_dependencies()
 
 rust_register_toolchains(
-    edition = "2018",
-    versions = ["1.66.0"],
+    edition = "2021",
+    versions = ["1.70.0"],
 )
 
 load("@rules_rust//crate_universe:repositories.bzl", "crate_universe_dependencies")