diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 86e1236..d09a337 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -8,7 +8,7 @@ dependencies = [
     "fastapi==0.135.1",
     "uvicorn[standard]==0.42.0",
     "pydantic==2.12.5",
-    "pydantic-settings==2.12.0",
+    "pydantic-settings==2.13.1",
     "python-dotenv==1.2.2",
     "sqlalchemy[asyncio]==2.0.48",
     "asyncpg==0.31.0",
diff --git a/backend/uv.lock b/backend/uv.lock
index 048cd11..cf53dc6 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -65,7 +65,7 @@ requires-dist = [
     { name = "fastapi", specifier = "==0.135.1" },
     { name = "httpx", marker = "extra == 'dev'", specifier = "==0.28.1" },
     { name = "pydantic", specifier = "==2.12.5" },
-    { name = "pydantic-settings", specifier = "==2.12.0" },
+    { name = "pydantic-settings", specifier = "==2.13.1" },
     { name = "pytest", marker = "extra == 'dev'", specifier = "==9.0.2" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = "==1.3.0" },
     { name = "python-dotenv", specifier = "==1.2.2" },
@@ -369,16 +369,16 @@ wheels = [
 
 [[package]]
 name = "pydantic-settings"
-version = "2.12.0"
+version = "2.13.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pydantic" },
     { name = "python-dotenv" },
     { name = "typing-inspection" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/43/4b/ac7e0aae12027748076d72a8764ff1c9d82ca75a7a52622e67ed3f765c54/pydantic_settings-2.12.0.tar.gz", hash = "sha256:005538ef951e3c2a68e1c08b292b5f2e71490def8589d4221b95dab00dafcfd0", size = 194184, upload-time = "2025-11-10T14:25:47.013Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/52/6d/fffca34caecc4a3f97bda81b2098da5e8ab7efc9a66e819074a11955d87e/pydantic_settings-2.13.1.tar.gz", hash = "sha256:b4c11847b15237fb0171e1462bf540e294affb9b86db4d9aa5c01730bdbe4025", size = 223826, upload-time = "2026-02-19T13:45:08.055Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/c1/60/5d4751ba3f4a40a6891f24eec885f51afd78d208498268c734e256fb13c4/pydantic_settings-2.12.0-py3-none-any.whl", hash = "sha256:fddb9fd99a5b18da837b29710391e945b1e30c135477f484084ee513adb93809", size = 51880, upload-time = "2025-11-10T14:25:45.546Z" },
+    { url = "https://files.pythonhosted.org/packages/00/4b/ccc026168948fec4f7555b9164c724cf4125eac006e176541483d2c959be/pydantic_settings-2.13.1-py3-none-any.whl", hash = "sha256:d56fd801823dbeae7f0975e1f8c8e25c258eb75d278ea7abb5d9cebb01b56237", size = 58929, upload-time = "2026-02-19T13:45:06.034Z" },
 ]
 
 [[package]]