diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index ec25d2c..8a8eb96 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -25,6 +25,6 @@ package = false
 [dependency-groups]
 dev = [
     "ruff>=0.15.13,<0.16.0",
-    "datamodel-code-generator>=0.35.0,<0.36.0",
+    "datamodel-code-generator>=0.57.0,<0.58.0",
     "pip-audit>=2.10.0,<3.0.0",
 ]
diff --git a/backend/uv.lock b/backend/uv.lock
index 356ef13..8ccc472 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -686,7 +686,7 @@ wheels = [
 
 [[package]]
 name = "datamodel-code-generator"
-version = "0.35.0"
+version = "0.57.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "argcomplete" },
@@ -695,14 +695,12 @@ dependencies = [
     { name = "inflect" },
     { name = "isort" },
     { name = "jinja2" },
-    { name = "packaging" },
     { name = "pydantic" },
     { name = "pyyaml" },
-    { name = "tomli", marker = "python_full_version < '3.12'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/70/e1/dbf7c2edb1b1db1f4fd472ee92f985ec97d58902512013d9c4584108329c/datamodel_code_generator-0.35.0.tar.gz", hash = "sha256:46805fa2515d3871f6bfafce9aa63128e735a7a6a4cfcbf9c27b3794ee4ea846", size = 459915, upload-time = "2025-10-09T19:26:49.837Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/5d/44/87d5980f813a1e323c5d726b3ac5fec8c915ce8a77fcdceaf9c00457dbae/datamodel_code_generator-0.57.0.tar.gz", hash = "sha256:0eda778ea06eaa476e542a5f1fe1d14cc3bbf686edb33a0ad6151c7d19089906", size = 932941, upload-time = "2026-05-07T16:21:55.819Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/95/ef/0ed17459fe6076219fcd45f69a0bb4bd1cb041b39095ca2946808a9b5f04/datamodel_code_generator-0.35.0-py3-none-any.whl", hash = "sha256:c356d1e4a555f86667a4262db03d4598a30caeda8f51786555fd269c8abb806b", size = 121436, upload-time = "2025-10-09T19:26:48.437Z" },
+    { url = "https://files.pythonhosted.org/packages/c5/c1/4fb9a44bb4a305b860c5a5b1866dcccfac3b76f5f170a9e68fc7733e16d2/datamodel_code_generator-0.57.0-py3-none-any.whl", hash = "sha256:d26bf5defe5154493d0aa5a822b7725332b9e9dd2abccc2f8856052286aa83b5", size = 259343, upload-time = "2026-05-07T16:21:53.823Z" },
 ]
 
 [[package]]
@@ -1150,6 +1148,7 @@ wheels = [
 name = "greenlet"
 version = "3.5.1"
 source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/6d/6e/802acd792aebb2256fbbee8cacf2727faaeb6f240ac11008f09eae4414bc/greenlet-3.5.1.tar.gz", hash = "sha256:5a56aeb7d5d9cc4b3a735efb5095bd4b4f6f0e4f93e5ca876d0e2315137b7829", size = 197356, upload-time = "2026-05-20T15:05:03.917Z" }
 wheels = [
     { url = "https://files.pythonhosted.org/packages/42/3c/ff890b466eaba2b0f5e6bdfff025f8c75f41b8ffdc3dbc3d24ad261e764a/greenlet-3.5.1-cp311-cp311-macosx_11_0_universal2.whl", hash = "sha256:73f78f9b9f0a5c06e5c946ba1e8e36f5114923b6be109ee618c54f079c3ea14f", size = 284764, upload-time = "2026-05-20T13:09:10.204Z" },
     { url = "https://files.pythonhosted.org/packages/81/0e/5e5457be3d256918f6a4756f073548a3f0190836e2cc94aa6d0d617a940b/greenlet-3.5.1-cp311-cp311-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:a0cbed8bb44e23c5b199f888f4e4ce096b45ad9f25ff74a7ad0213875e936bb2", size = 603479, upload-time = "2026-05-20T14:00:04.757Z" },
@@ -1833,7 +1832,7 @@ requires-dist = [
 
 [package.metadata.requires-dev]
 dev = [
-    { name = "datamodel-code-generator", specifier = ">=0.35.0,<0.36.0" },
+    { name = "datamodel-code-generator", specifier = ">=0.57.0,<0.58.0" },
     { name = "pip-audit", specifier = ">=2.10.0,<3.0.0" },
     { name = "ruff", specifier = ">=0.15.13,<0.16.0" },
 ]