diff --git a/.github/release-notes.md b/.github/release-notes.md
index 99b1a9e..a879a66 100644
--- a/.github/release-notes.md
+++ b/.github/release-notes.md
@@ -18,3 +18,5 @@ is the runtime tree only (packages, PWA, launchers, docs — no tests, no git):
 extract it anywhere and run `start.bat` (Windows) or `./start.sh`
 (Linux/macOS).  Python 3 has to be on `PATH`; `pip install pyusb` is only
 needed for direct SIMtrace2 capture.
+
+The project is MIT-licensed (see `LICENSE`).
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..80d8465
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Anton Troshin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/MANIFEST.in b/MANIFEST.in
index 03102c2..12cb0bf 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 graft frontend
+include LICENSE
 include README.md README_RUS.md 70-simtrace2-pysniff.rules
 include start.sh start.bat sniff-start.sh sniff-start.bat
diff --git a/README.md b/README.md
index 9f3225f..2ce6ef8 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ Everything is on the
 **Wheel** (the PWA is inside the package):
 
 ```sh
-pip install ./simtrace_analyser-2.7.12-py3-none-any.whl
+pip install ./simtrace_analyser-2.7.13-py3-none-any.whl
 
 # then run (the UI is served at http://127.0.0.1:8081/):
 simtrace-analyser-server --capture gsmtap
@@ -119,7 +119,7 @@ Fedora), install into a virtual environment first:
 shown there):
 
 ```sh
-pip install https://github.com/anttro/simtrace-analyser/releases/download/v2.7.12/simtrace_analyser-2.7.12-py3-none-any.whl
+pip install https://github.com/anttro/simtrace-analyser/releases/download/v2.7.13/simtrace_analyser-2.7.13-py3-none-any.whl
 ```
 
 With the GitHub CLI, download the latest wheel without knowing the version:
@@ -133,7 +133,7 @@ pip install ./simtrace_analyser-*.whl
 without the git history: unzip, `cd` into it and use the launchers below
 (`./start.sh` on Linux/macOS, `start.bat` on Windows).
 
-**Zip (Windows-friendly, no installer)** — `simtrace-analyser-2.7.12.zip` is
+**Zip (Windows-friendly, no installer)** — `simtrace-analyser-2.7.13.zip` is
 the runtime tree only (packages, PWA, launchers, docs; no tests, no git):
 download it, extract it anywhere and run `start.bat` (Windows) or
 `./start.sh` (Linux/macOS).  Python 3 has to be on `PATH`; `pip install pyusb`
@@ -510,3 +510,10 @@ Use `--inactivity-timeout` to also trigger reconnect on silent firmware hangs.
 - **[sigrok_iso7816_stream](https://github.com/anttro/sigrok_iso7816_stream)** —
   FX2LP-based passive ISO 7816 sniffer that emits the same GSMTAP-SIM stream
   on UDP 4729 (accepted by this project's GSMTAP listener).
+
+## License
+
+MIT — see [LICENSE](LICENSE).  The decoders and the PWA's DES/3DES
+implementation are original, written from the ISO 7816, ETSI and 3GPP
+specifications; no third-party code is bundled.  PyUSB (BSD-3-Clause) is a
+runtime dependency for direct hardware capture.
diff --git a/README_RUS.md b/README_RUS.md
index 7031129..6338cac 100644
--- a/README_RUS.md
+++ b/README_RUS.md
@@ -111,7 +111,7 @@ git) или склонировать репозиторий для разраб
 **Wheel** (PWA внутри пакета):
 
 ```sh
-pip install ./simtrace_analyser-2.7.12-py3-none-any.whl
+pip install ./simtrace_analyser-2.7.13-py3-none-any.whl
 
 # затем запуск (интерфейс отдаётся на http://127.0.0.1:8081/):
 simtrace-analyser-server --capture gsmtap
@@ -125,7 +125,7 @@ Fedora), сначала создайте виртуальное окружени
 указанную там):
 
 ```sh
-pip install https://github.com/anttro/simtrace-analyser/releases/download/v2.7.12/simtrace_analyser-2.7.12-py3-none-any.whl
+pip install https://github.com/anttro/simtrace-analyser/releases/download/v2.7.13/simtrace_analyser-2.7.13-py3-none-any.whl
 ```
 
 С GitHub CLI можно скачать wheel последнего релиза, не зная версии:
@@ -139,7 +139,7 @@ pip install ./simtrace_analyser-*.whl
 дерево без истории git: распакуйте, перейдите в каталог и используйте скрипты
 запуска ниже (`./start.sh` в Linux/macOS, `start.bat` в Windows).
 
-**Zip (для Windows, без установки)** — `simtrace-analyser-2.7.12.zip`
+**Zip (для Windows, без установки)** — `simtrace-analyser-2.7.13.zip`
 содержит только рабочее дерево (пакеты, PWA, скрипты запуска, документацию;
 без тестов и git): скачайте, распакуйте в любое место и запустите `start.bat`
 (Windows) или `./start.sh` (Linux/macOS). Python 3 должен быть в `PATH`;
@@ -530,3 +530,10 @@ for msg in session.iter_messages():
 - **[sigrok_iso7816_stream](https://github.com/anttro/sigrok_iso7816_stream)** —
   пассивный ISO 7816 сниффер на базе FX2LP, выдающий такой же поток
   GSMTAP-SIM на UDP 4729 (принимается GSMTAP-листенером этого проекта).
+
+## Лицензия
+
+MIT — см. [LICENSE](LICENSE). Декодеры и реализация DES/3DES в PWA написаны
+самостоятельно по спецификациям ISO 7816, ETSI и 3GPP; сторонний код в проект
+не включён. PyUSB (BSD-3-Clause) — зависимость для прямого захвата с
+оборудования.
diff --git a/frontend/index.html b/frontend/index.html
index d2abf88..83a2718 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3389,7 +3389,7 @@ function onSearchChange() {
 }
 
 // ──────────────────── Versioning ────────────────────
-const PWA_VERSION = '2.7.12';
+const PWA_VERSION = '2.7.13';
 const MIN_SERVER_VERSION = '2.3.0';
 
 function parseVersion(v) {
diff --git a/frontend/sw.js b/frontend/sw.js
index 847c88a..4e68b5d 100644
--- a/frontend/sw.js
+++ b/frontend/sw.js
@@ -1,4 +1,4 @@
-const CACHE = 'simtrace-analyser-v94';
+const CACHE = 'simtrace-analyser-v95';
 
 const PRECACHE = [
     'index.html',
diff --git a/pyproject.toml b/pyproject.toml
index 4fbee5e..2e07a6d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,14 @@
 [build-system]
-requires = ["setuptools>=64"]
+requires = ["setuptools>=77"]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "simtrace-analyser"
-version = "2.7.12"
+version = "2.7.13"
 description = "SIMtrace Analyser — APDU trace analyser for GSMTAP/PCAP captures (bundles the simtrace2-pysniff utility)"
 readme = {file = "README.md", content-type = "text/markdown"}
-license = {text = "GPL-2.0-or-later"}
+license = "MIT"
+license-files = ["LICENSE"]
 requires-python = ">=3.9"
 dependencies = [
     "pyusb>=1.2",
diff --git a/simtrace_analyser/version.py b/simtrace_analyser/version.py
index e809820..06c51a7 100644
--- a/simtrace_analyser/version.py
+++ b/simtrace_analyser/version.py
@@ -1,3 +1,3 @@
 """Single source of truth for the SIMtrace Analyser version."""
 
-__version__ = '2.7.12'
+__version__ = '2.7.13'
diff --git a/tests/test_packaging.py b/tests/test_packaging.py
index 6aaca17..ba610e0 100644
--- a/tests/test_packaging.py
+++ b/tests/test_packaging.py
@@ -70,6 +70,15 @@ class TestDistributionMetadata(unittest.TestCase):
         # The sdist carries frontend/, so a wheel built from it has the PWA.
         self.assertIn('graft frontend', self._read('MANIFEST.in'))
 
+    def test_license_is_mit(self):
+        # The project is MIT; the metadata and the file must not drift apart.
+        pyproject = self._read('pyproject.toml')
+        self.assertIn('license = "MIT"', pyproject)
+        self.assertIn('license-files = ["LICENSE"]', pyproject)
+        license_text = self._read('LICENSE')
+        self.assertTrue(license_text.startswith('MIT License\n'))
+        self.assertIn('Permission is hereby granted, free of charge', license_text)
+
     def test_setup_py_bundles_the_pwa(self):
         setup_py = self._read('setup.py')
         self.assertIn('frontend', setup_py)
diff --git a/tests/test_pcap_import.py b/tests/test_pcap_import.py
index 07aedd9..c826c4b 100644
--- a/tests/test_pcap_import.py
+++ b/tests/test_pcap_import.py
@@ -224,7 +224,7 @@ class TestImportEndpoint(unittest.TestCase):
 class TestVersion(unittest.TestCase):
     def test_package_version(self):
         from simtrace2_pysniff import __version__
-        self.assertEqual(__version__, '2.7.12')
+        self.assertEqual(__version__, '2.7.13')
 
     def test_status_includes_version(self):
         import os
diff --git a/tests/test_release_zip.py b/tests/test_release_zip.py
index 978aa5a..c617e08 100644
--- a/tests/test_release_zip.py
+++ b/tests/test_release_zip.py
@@ -51,6 +51,7 @@ class TestReleaseZip(unittest.TestCase):
                 'sniff-start.sh',
                 'sniff-start.bat',
                 '70-simtrace2-pysniff.rules',
+                'LICENSE',
                 'README.md'):
             self.assertIn('%s/%s' % (top, rel), self.names)