diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8bca429..5169f42 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,6 +40,23 @@ jobs:
       - name: Test
         run: poetry run pytest -rP -n auto .
 
+  security:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+      - name: Set up python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+      - name: Bootstrap poetry
+        run: |
+          curl -sSL https://install.python-poetry.org | python - -y --version 1.5.1
+      - name: Install dependencies
+        run: poetry install
+      - name: Security scan
+        run: poetry run pip-audit .
+
   publish:
     needs: [compile, test]
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..c0d9603
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 AgentMail
+
+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/pyproject.toml b/pyproject.toml
index 6245bf4..c94fe77 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,6 +53,7 @@ pytest-xdist = "^3.6.1"
 python-dateutil = "^2.9.0"
 types-python-dateutil = "^2.9.0.20240316"
 ruff = "==0.11.5"
+pip-audit = "^2.7.0"
 
 [tool.pytest.ini_options]
 testpaths = [ "tests" ]
diff --git a/src/agentmail/core/query_encoder.py b/src/agentmail/core/query_encoder.py
index 94228a8..ddd5078 100644
--- a/src/agentmail/core/query_encoder.py
+++ b/src/agentmail/core/query_encoder.py
@@ -1,7 +1,7 @@
 # This file was auto-generated by Fern from our API Definition.
 
-from typing import Any, Dict, List, Optional, Tuple
 import json
+from typing import Any, Dict, List, Optional, Tuple
 
 import pydantic
 
diff --git a/tests/utils/test_query_encoding.py b/tests/utils/test_query_encoding.py
index 4f4c442..e3766a4 100644
--- a/tests/utils/test_query_encoding.py
+++ b/tests/utils/test_query_encoding.py
@@ -3,6 +3,7 @@
 
 from agentmail.core.query_encoder import encode_query
 
+
 def test_query_encoding_simple_list() -> None:
     assert encode_query({"hello": ["world", "today"]}) == [("hello", '["world", "today"]')]