diff --git a/pkgs/development/tools/rust/rustup/default.nix b/pkgs/development/tools/rust/rustup/default.nix
index 0269c344e2a..ffae05f1c74 100644
--- a/pkgs/development/tools/rust/rustup/default.nix
+++ b/pkgs/development/tools/rust/rustup/default.nix
@@ -4,13 +4,13 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "rustup";
-  version = "1.21.0";
+  version = "1.21.1";
 
   src = fetchFromGitHub {
     owner = "rust-lang";
     repo = "rustup";
     rev = version;
-    sha256 = "1jyiix153iqsfbrm3xx8g0bnabihqlahhf4c81hgc68zg4cxrc9z";
+    sha256 = "0d7l3j8js16zgdx37kykavr343v65vchldz88j38jjyc43pcm2pg";
   };
 
   cargoSha256 = "0kn3sq99sgsh8msignyb4vjllv0wf1crqaw7sqp3ggmlkrdq35sd";