diff --git a/pyproject.toml b/pyproject.toml
index 5bec87c..6fc8e87 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ requires-python = ">=3.12"
 dependencies = [
     "fastapi-slim==0.115.12",
     "httpx==0.28.1",
-    "pydantic-settings==2.8.1",
+    "pydantic-settings==2.9.1",
     "python-dotenv==1.1.0",
 ]
 
diff --git a/uv.lock b/uv.lock
index d98aed4..7767262 100644
--- a/uv.lock
+++ b/uv.lock
@@ -185,15 +185,16 @@ wheels = [
 
 [[package]]
 name = "pydantic-settings"
-version = "2.8.1"
+version = "2.9.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pydantic" },
     { name = "python-dotenv" },
+    { name = "typing-inspection" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/88/82/c79424d7d8c29b994fb01d277da57b0a9b09cc03c3ff875f9bd8a86b2145/pydantic_settings-2.8.1.tar.gz", hash = "sha256:d5c663dfbe9db9d5e1c646b2e161da12f0d734d422ee56f567d0ea2cee4e8585", size = 83550, upload-time = "2025-02-27T10:10:32.338Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/67/1d/42628a2c33e93f8e9acbde0d5d735fa0850f3e6a2f8cb1eb6c40b9a732ac/pydantic_settings-2.9.1.tar.gz", hash = "sha256:c509bf79d27563add44e8446233359004ed85066cd096d8b510f715e6ef5d268", size = 163234, upload-time = "2025-04-18T16:44:48.265Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/0b/53/a64f03044927dc47aafe029c42a5b7aabc38dfb813475e0e1bf71c4a59d0/pydantic_settings-2.8.1-py3-none-any.whl", hash = "sha256:81942d5ac3d905f7f3ee1a70df5dfb62d5569c12f51a5a647defc1c3d9ee2e9c", size = 30839, upload-time = "2025-02-27T10:10:30.711Z" },
+    { url = "https://files.pythonhosted.org/packages/b6/5f/d6d641b490fd3ec2c4c13b4244d68deea3a1b970a97be64f34fb5504ff72/pydantic_settings-2.9.1-py3-none-any.whl", hash = "sha256:59b4f431b1defb26fe620c71a7d3968a710d719f5f4cdbbdb7926edeb770f6ef", size = 44356, upload-time = "2025-04-18T16:44:46.617Z" },
 ]
 
 [[package]]
@@ -300,7 +301,7 @@ dev = [
 requires-dist = [
     { name = "fastapi-slim", specifier = "==0.115.12" },
     { name = "httpx", specifier = "==0.28.1" },
-    { name = "pydantic-settings", specifier = "==2.8.1" },
+    { name = "pydantic-settings", specifier = "==2.9.1" },
     { name = "python-dotenv", specifier = "==1.1.0" },
 ]
 
@@ -319,3 +320,15 @@ sdist = { url = "https://files.pythonhosted.org/packages/df/db/f35a00659bc03fec3
 wheels = [
     { url = "https://files.pythonhosted.org/packages/26/9f/ad63fc0248c5379346306f8668cda6e2e2e9c95e01216d2b8ffd9ff037d0/typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d", size = 37438, upload-time = "2024-06-07T18:52:13.582Z" },
 ]
+
+[[package]]
+name = "typing-inspection"
+version = "0.4.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/82/5c/e6082df02e215b846b4b8c0b887a64d7d08ffaba30605502639d44c06b82/typing_inspection-0.4.0.tar.gz", hash = "sha256:9765c87de36671694a67904bf2c96e395be9c6439bb6c87b5142569dcdd65122", size = 76222, upload-time = "2025-02-25T17:27:59.638Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/31/08/aa4fdfb71f7de5176385bd9e90852eaf6b5d622735020ad600f2bab54385/typing_inspection-0.4.0-py3-none-any.whl", hash = "sha256:50e72559fcd2a6367a19f7a7e610e6afcb9fac940c650290eed893d61386832f", size = 14125, upload-time = "2025-02-25T17:27:57.754Z" },
+]