diff --git a/pkgs/by-name/pr/proto/package.nix b/pkgs/by-name/pr/proto/package.nix
index 71e26e3d57b4..0e19eb417167 100644
--- a/pkgs/by-name/pr/proto/package.nix
+++ b/pkgs/by-name/pr/proto/package.nix
@@ -10,16 +10,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "proto";
-  version = "0.38.0";
+  version = "0.38.3";
 
   src = fetchFromGitHub {
     owner = "moonrepo";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-60PLC/5aouvUy33Qw/orEv+3/3j//3frUxZdh4chlMc=";
+    hash = "sha256-o/du9XmiS7U5ypm6osQtVTjrJY60iLCkJ4DWCYOeIoY=";
   };
 
-  cargoHash = "sha256-l6BzvJI+DimykVKYl7Gow+7f3uwfDFajmHcXKoUwcUk=";
+  cargoHash = "sha256-Z0XPouvv6eR9eKLQurI/UGSiRZyGUo/x1c/XbcJlO5A=";
 
   buildInputs = lib.optionals stdenv.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration