diff --git a/bucket/rustup.json b/bucket/rustup.json
index b799de0a43..e8c6f5bdf5 100644
--- a/bucket/rustup.json
+++ b/bucket/rustup.json
@@ -1,7 +1,7 @@
 {
-    "version": "1.18.2",
+    "version": "1.18.3",
     "license": "MIT",
-    "hash": "f9a87198a4854d96b95ff9ccd3309772d7b89d2bf474bce4e6c6c3a0fe4d5e0d",
+    "hash": "9b15c26905d4505ab77e000750aa3aedeb909507485c5e5901b6ad7de9d42e2d",
     "homepage": "https://github.com/rust-lang-nursery/rustup.rs",
     "checkver": {
         "url": "https://raw.githubusercontent.com/rust-lang-nursery/rustup.rs/master/Cargo.toml",