diff --git a/bundled/tool/lsp_jsonrpc.py b/bundled/tool/lsp_jsonrpc.py
index 8255206..c850253 100644
--- a/bundled/tool/lsp_jsonrpc.py
+++ b/bundled/tool/lsp_jsonrpc.py
@@ -2,7 +2,6 @@
 # Licensed under the MIT License.
 """Light-weight JSON-RPC over standard IO."""
 
-
 import atexit
 import contextlib
 import io
diff --git a/bundled/tool/lsp_server.py b/bundled/tool/lsp_server.py
index d7f9ba2..aecdee7 100644
--- a/bundled/tool/lsp_server.py
+++ b/bundled/tool/lsp_server.py
@@ -1,6 +1,7 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 """Implementation of tool support over LSP."""
+
 from __future__ import annotations
 
 import copy
diff --git a/bundled/tool/lsp_utils.py b/bundled/tool/lsp_utils.py
index fb5f032..0179fff 100644
--- a/bundled/tool/lsp_utils.py
+++ b/bundled/tool/lsp_utils.py
@@ -1,6 +1,7 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 """Utility functions and classes for use with running tools over LSP."""
+
 from __future__ import annotations
 
 import contextlib
diff --git a/requirements.txt b/requirements.txt
index 925cb85..c1e7bc3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,9 +12,9 @@ attrs==25.4.0 \
     #   jschema-to-python
     #   lsprotocol
     #   sarif-om
-bandit[sarif]==1.9.2 \
-    --hash=sha256:32410415cd93bf9c8b91972159d5cf1e7f063a9146d70345641cd3877de348ce \
-    --hash=sha256:bda8d68610fc33a6e10b7a8f1d61d92c8f6c004051d5e946406be1fb1b16a868
+bandit[sarif]==1.9.3 \
+    --hash=sha256:4745917c88d2246def79748bde5e08b9d5e9b92f877863d43fab70cd8814ce6a \
+    --hash=sha256:ade4b9b7786f89ef6fc7344a52b34558caec5da74cb90373aed01de88472f774
     # via -r requirements.in
 cattrs==25.3.0 \
     --hash=sha256:1ac88d9e5eda10436c4517e390a4142d88638fe682c436c93db7ce4a277b884a \
diff --git a/src/test/python_tests/lsp_test_client/constants.py b/src/test/python_tests/lsp_test_client/constants.py
index 882df6e..8f33e13 100644
--- a/src/test/python_tests/lsp_test_client/constants.py
+++ b/src/test/python_tests/lsp_test_client/constants.py
@@ -3,6 +3,7 @@
 """
 Constants for use with tests.
 """
+
 import pathlib
 
 TEST_ROOT = pathlib.Path(__file__).parent.parent
diff --git a/src/test/python_tests/lsp_test_client/utils.py b/src/test/python_tests/lsp_test_client/utils.py
index df92fe4..c65d849 100644
--- a/src/test/python_tests/lsp_test_client/utils.py
+++ b/src/test/python_tests/lsp_test_client/utils.py
@@ -3,6 +3,7 @@
 """
 Utility functions for use with tests.
 """
+
 import json
 import os
 import pathlib
diff --git a/src/test/python_tests/test_server.py b/src/test/python_tests/test_server.py
index edc331d..1443a0d 100644
--- a/src/test/python_tests/test_server.py
+++ b/src/test/python_tests/test_server.py
@@ -59,7 +59,7 @@ def _handler(params):
                     "severity": 1,
                     "code": "B324:hashlib",
                     "codeDescription": {
-                        "href": "https://bandit.readthedocs.io/en/1.9.2/plugins/b324_hashlib.html"
+                        "href": "https://bandit.readthedocs.io/en/1.9.3/plugins/b324_hashlib.html"
                     },
                     "source": SERVER_INFO["name"],
                 },