diff --git a/pkgs/by-name/pr/proto/package.nix b/pkgs/by-name/pr/proto/package.nix
index 859dddcf17d4..1b737f49efba 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 = "0.42.0";
+  version = "0.43.1";
 
   src = fetchFromGitHub {
     owner = "moonrepo";
     repo = "proto";
     rev = "v${version}";
-    hash = "sha256-ZCuqxsCyaw5JmX9bpsSeTpSc07DnvPE9EiRQrHR5UNo=";
+    hash = "sha256-OvDkDbW7w805ZMLVg3yJqZCp6Xn8oW2dMJe/CnWROoo=";
   };
 
-  cargoHash = "sha256-ykl/WC3sfIwT1uhTrnRz2G8bzr1vkoGB03MwNP/Y5Xs=";
+  cargoHash = "sha256-ataFb/+gPkOjDZYht/c+A75H/GBSW9toPBRQ6H16U9g=";
 
   buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
     darwin.apple_sdk.frameworks.SystemConfiguration