diff --git a/pyproject.toml b/pyproject.toml
index 2adb07e..b158e95 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,7 +76,7 @@ coverage = [
 init_bo4e = [
     "bo4e-python-generator==0.0.13",
     "bo4e-schema-tool==0.0.9",
-    "datamodel-code-generator==0.25.9"
+    "datamodel-code-generator==0.71.0"
 ]
 linting = [
     "ruff==0.16.0",
diff --git a/uv.lock b/uv.lock
index 1d271b5..ea79604 100644
--- a/uv.lock
+++ b/uv.lock
@@ -221,7 +221,7 @@ dev = [
     { name = "bo4e-schema-tool", specifier = "==0.0.9" },
     { name = "codespell", specifier = "==2.4.3" },
     { name = "coverage", specifier = "==7.15.2" },
-    { name = "datamodel-code-generator", specifier = "==0.25.9" },
+    { name = "datamodel-code-generator", specifier = "==0.71.0" },
     { name = "mypy", specifier = "==2.3.0" },
     { name = "pre-commit" },
     { name = "pytest", specifier = "==9.1.1" },
@@ -230,7 +230,7 @@ dev = [
 init-bo4e = [
     { name = "bo4e-python-generator", specifier = "==0.0.13" },
     { name = "bo4e-schema-tool", specifier = "==0.0.9" },
-    { name = "datamodel-code-generator", specifier = "==0.25.9" },
+    { name = "datamodel-code-generator", specifier = "==0.71.0" },
 ]
 linting = [{ name = "ruff", specifier = "==0.16.0" }]
 spell-check = [{ name = "codespell", specifier = "==2.4.3" }]
@@ -614,22 +614,21 @@ wheels = [
 
 [[package]]
 name = "datamodel-code-generator"
-version = "0.25.9"
+version = "0.71.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "argcomplete" },
-    { name = "black" },
+    { name = "black", marker = "sys_platform != 'emscripten'" },
     { name = "genson" },
     { name = "inflect" },
-    { name = "isort" },
+    { name = "isort", marker = "sys_platform != 'emscripten'" },
     { name = "jinja2" },
-    { name = "packaging" },
-    { name = "pydantic", extra = ["email"], marker = "python_full_version < '4'" },
+    { name = "pydantic" },
     { name = "pyyaml" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/ad/0e/391ae42ecb8db5d19236e802b2fba9ee1e583405e9d134f96695a49d1bf6/datamodel_code_generator-0.25.9.tar.gz", hash = "sha256:65ca9807d8edbd88a7f7931c10f4bc1c08bd9bbc5bb0508418a2b6a16590eb65", size = 88831, upload-time = "2024-08-07T03:11:05.444Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/54/f5/f4ce23d99503b147c9ec514dc995a96d3b4d2a3284252ad665f875a3145d/datamodel_code_generator-0.71.0.tar.gz", hash = "sha256:d27cd7a0d10f9b2db74a41db7f3e050c226da9cf0afb4916a7ab56275ebacbf2", size = 1684916, upload-time = "2026-07-24T15:32:04.334Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/b9/68/b3ade2468b649a78561ec2f64222a32d27c83d2e3612cc1846703d489ffd/datamodel_code_generator-0.25.9-py3-none-any.whl", hash = "sha256:9e0324233123d6e39a35bc0004771956935889a974aacfd7a0651de11d2219a9", size = 110721, upload-time = "2024-08-07T03:11:02.237Z" },
+    { url = "https://files.pythonhosted.org/packages/c6/4d/556cb290170f41b97ce50fd872e10a266f141d7a38352bb3071e4ae61f41/datamodel_code_generator-0.71.0-py3-none-any.whl", hash = "sha256:680b68338d59e98a0559eeb54d8e5ca33c35b3ec0bef922ec2cc783f2cb28e9a", size = 452379, upload-time = "2026-07-24T15:32:02.467Z" },
 ]
 
 [[package]]
@@ -641,28 +640,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/02/08/9c41fb51ab5b43eb21674aff13df270e8ba6c4b29c8624e328dc7a9482af/distlib-0.4.3-py2.py3-none-any.whl", hash = "sha256:4b0ce306c966eb73bc3a7b6abad017c556dadd92c44701562cd528ac7fde4d5b", size = 470628, upload-time = "2026-06-12T08:04:50.506Z" },
 ]
 
-[[package]]
-name = "dnspython"
-version = "2.8.0"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/8c/8b/57666417c0f90f08bcafa776861060426765fdb422eb10212086fb811d26/dnspython-2.8.0.tar.gz", hash = "sha256:181d3c6996452cb1189c4046c61599b84a5a86e099562ffde77d26984ff26d0f", size = 368251, upload-time = "2025-09-07T18:58:00.022Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/ba/5a/18ad964b0086c6e62e2e7500f7edc89e3faa45033c71c1893d34eed2b2de/dnspython-2.8.0-py3-none-any.whl", hash = "sha256:01d9bbc4a2d76bf0db7c1f729812ded6d912bd318d3b1cf81d30c0f845dbf3af", size = 331094, upload-time = "2025-09-07T18:57:58.071Z" },
-]
-
-[[package]]
-name = "email-validator"
-version = "2.3.0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "dnspython" },
-    { name = "idna" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/f5/22/900cb125c76b7aaa450ce02fd727f452243f2e91a61af068b40adba60ea9/email_validator-2.3.0.tar.gz", hash = "sha256:9fc05c37f2f6cf439ff414f8fc46d917929974a82244c20eb10231ba60c54426", size = 51238, upload-time = "2025-08-26T13:09:06.831Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/de/15/545e2b6cf2e3be84bc1ed85613edd75b8aea69807a71c26f4ca6a9258e82/email_validator-2.3.0-py3-none-any.whl", hash = "sha256:80f13f623413e6b197ae73bb10bf4eb0908faf509ad8362c5edeb0be7fd450b4", size = 35604, upload-time = "2025-08-26T13:09:05.858Z" },
-]
-
 [[package]]
 name = "filelock"
 version = "3.32.0"
@@ -1144,11 +1121,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/fd/7b/122376b1fd3c62c1ed9dc80c931ace4844b3c55407b6fb2d199377c9736f/pydantic-2.13.4-py3-none-any.whl", hash = "sha256:45a282cde31d808236fd7ea9d919b128653c8b38b393d1c4ab335c62924d9aba", size = 472262, upload-time = "2026-05-06T13:43:02.641Z" },
 ]
 
-[package.optional-dependencies]
-email = [
-    { name = "email-validator" },
-]
-
 [[package]]
 name = "pydantic-core"
 version = "2.46.4"