diff --git a/pkgs/tools/security/rblake2sum/default.nix b/pkgs/tools/security/rblake2sum/default.nix
index a5a4a1bce76c..8f2a86836356 100644
--- a/pkgs/tools/security/rblake2sum/default.nix
+++ b/pkgs/tools/security/rblake2sum/default.nix
@@ -24,5 +24,6 @@ rustPlatform.buildRustPackage {
     homepage = "https://github.com/crev-dev/rblake2sum";
     license = [ licenses.mit ];
     maintainers = with maintainers; [ dpc ];
+    mainProgram = "rblake2sum";
   };
 }
diff --git a/pkgs/tools/security/rblake3sum/default.nix b/pkgs/tools/security/rblake3sum/default.nix
new file mode 100644
index 000000000000..341dcd06fb6a
--- /dev/null
+++ b/pkgs/tools/security/rblake3sum/default.nix
@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, rustPlatform
+, fetchFromGitHub
+, Security
+}:
+rustPlatform.buildRustPackage {
+  pname = "rblake3sum";
+  version = "0.4.0";
+
+  src = fetchFromGitHub {
+    owner = "rustshop";
+    repo = "rblake3sum";
+    rev = "6a8e2576ccc05214eacb75b75a9d4cfdf272161c";
+    hash = "sha256-UFk6SJVA58WXhH1CIuT48MEF19yPUe1HD+ekn4LDj8g=";
+  };
+
+  cargoHash = "sha256-SE/Zg/UEV/vhB/VDcn8Y70OUIoxbJBh6H2QgFMkWPc4=";
+
+  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+
+  meta = with lib; {
+    description = "A recursive blake3 digest (hash) of a file-system path";
+    homepage = "https://github.com/rustshop/rblake3sum";
+    license = [ licenses.mit ];
+    maintainers = with maintainers; [ dpc ];
+    mainProgram = "rblake3sum";
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5a91a1aa7aaf..7fbe48a3824b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6324,6 +6324,10 @@ with pkgs;
       inherit (darwin.apple_sdk.frameworks) Security;
   };
 
+  rblake3sum = callPackage ../tools/security/rblake3sum {
+      inherit (darwin.apple_sdk.frameworks) Security;
+  };
+
   reg = callPackage ../tools/virtualization/reg { };
 
   retool = callPackage ../applications/misc/retool { };