diff --git a/bin/exe2dist.dart b/bin/exe2dist.dart
index 7cbe65d..9bbde9c 100644
--- a/bin/exe2dist.dart
+++ b/bin/exe2dist.dart
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: (c) 2022 Artsiom iG <github.com/rtmigo>
+// SPDX-License-Identifier: MIT
+
 import 'dart:io';
 
 import 'package:glob/glob.dart';
diff --git a/bin/source/architecture.dart b/bin/source/architecture.dart
index 38733f0..b3554a2 100644
--- a/bin/source/architecture.dart
+++ b/bin/source/architecture.dart
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: (c) 2022 Artsiom iG <github.com/rtmigo>
+// SPDX-License-Identifier: MIT
+
 import 'dart:io';
 
 import 'expections.dart';
diff --git a/bin/source/archive.dart b/bin/source/archive.dart
index a97a87b..536d934 100644
--- a/bin/source/archive.dart
+++ b/bin/source/archive.dart
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: (c) 2022 Artsiom iG <github.com/rtmigo>
+// SPDX-License-Identifier: MIT
+
 import 'dart:io';
 
 import 'package:archive/archive_io.dart';
@@ -11,7 +14,8 @@ Future<void> fileToGzip(File source, File targetGzip) async {
   try {
     final output = OutputFileStream(targetGzip.path);
     try {
-      GZipEncoder().encode(input, output: output, level: 9);
+      GZipEncoder()
+          .encode(input, output: output, level: Deflate.BEST_COMPRESSION);
     } finally {
       await output.close();
     }
@@ -41,7 +45,8 @@ Future<void> fileToTarGz(File source, String entryName, File targetTgz) async {
   }
 }
 
-Future<void> toZip(File sourceFile, String entryName, File zipFile) async {
+Future<void> zipSingleFile(
+    File sourceFile, String entryName, File zipFile) async {
   if (!zipFile.path.endsWith(".zip")) {
     throw ArgumentError(zipFile);
   }
@@ -50,7 +55,7 @@ Future<void> toZip(File sourceFile, String entryName, File zipFile) async {
   }
 
   final zip = ZipFileEncoder();
-  zip.create(zipFile.path);
+  zip.create(zipFile.path, level: Deflate.BEST_COMPRESSION);
   zip.addFile(sourceFile, entryName);
   zip.close();
 }
@@ -76,7 +81,6 @@ class TempExeWithPermissions {
   }
 }
 
-
 /// Создаёт каталог, если он ещё не существует, но существует родительский.
 void createOnNeed(Directory dir) {
   if (dir.existsSync()) {
@@ -109,7 +113,7 @@ Future<void> binaryToDist(
     if (arch.isWindows) {
       entryName = "$programName.exe";
       arcSuffix = ".zip";
-      arcFunc = toZip;
+      arcFunc = zipSingleFile;
     } else {
       entryName = programName;
       arcSuffix = ".tgz";
diff --git a/bin/source/expections.dart b/bin/source/expections.dart
index d718d24..578a53d 100644
--- a/bin/source/expections.dart
+++ b/bin/source/expections.dart
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: (c) 2022 Artsiom iG <github.com/rtmigo>
+// SPDX-License-Identifier: MIT
+
 import 'dart:io';
 
 class ExpectedException extends Error {}
diff --git a/pubspec.yaml b/pubspec.yaml
index 369ed96..7d8ec69 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: exe2dist
 description: Binary executable packaging tool.
-version: 0.3.2
+version: 0.3.3
 
 environment:
   sdk: '>=2.18.0 <3.0.0'