diff --git a/poetry.lock b/poetry.lock
index c56d20cd..8404e3d4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -787,18 +787,19 @@ files = [
 
 [[package]]
 name = "elementpath"
-version = "4.4.0"
+version = "5.1.4"
 description = "XPath 1.0/2.0/3.0/3.1 parsers and selectors for ElementTree and lxml"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.10"
 groups = ["main"]
 files = [
-    {file = "elementpath-4.4.0-py3-none-any.whl", hash = "sha256:cda092281afe508ece1bf65373905b30196c9426f3730cfea46059e103a131bd"},
-    {file = "elementpath-4.4.0.tar.gz", hash = "sha256:dfc4b8ca3d87966dcb0df40b5b6d04a98f053683271930fad9e7fa000924dfb2"},
+    {file = "elementpath-5.1.4-py3-none-any.whl", hash = "sha256:5ec8d7bb44b16c98414a6a95e20cb150f3cbfc3cac65edc14773288c7a937376"},
+    {file = "elementpath-5.1.4.tar.gz", hash = "sha256:3c912a9c41311ac5244c038867670d7c0b0fec0e444813608e5b846dbb3428ac"},
 ]
 
 [package.extras]
-dev = ["Sphinx", "coverage", "flake8", "lxml", "lxml-stubs", "memory-profiler", "memray", "mypy", "tox", "xmlschema (>=2.0.0)"]
+dev = ["coverage", "flake8", "lxml", "lxml-stubs", "memray ; platform_python_implementation != \"PyPy\"", "mypy", "psutil", "sphinx", "tox (>=4.0)", "xmlschema (>=4.0.1)"]
+docs = ["readthedocs-sphinx-search", "sphinx"]
 
 [[package]]
 name = "exceptiongroup"
@@ -4533,22 +4534,22 @@ packaging = ">=24.0"
 
 [[package]]
 name = "xmlschema"
-version = "3.4.5"
+version = "4.3.2"
 description = "An XML Schema validator and decoder"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.10"
 groups = ["main"]
 files = [
-    {file = "xmlschema-3.4.5-py3-none-any.whl", hash = "sha256:c91a2fca387dc4e8a2f2cb4a411ed23bef9da539968e5d858a3fe7f76a65464e"},
-    {file = "xmlschema-3.4.5.tar.gz", hash = "sha256:243244743f151ec859ec0bbf1368fa3f70e5f29e977b77f72e1c9b8f8ae670f6"},
+    {file = "xmlschema-4.3.2-py3-none-any.whl", hash = "sha256:cf5c970a30f6ebcb3da35260e694704cc0b6794d8ace46125bb2a95e38ed9307"},
+    {file = "xmlschema-4.3.2.tar.gz", hash = "sha256:f3b33a21a2b2cdc404ddc3fb599d8bc1dee90b155d547370672e6e684746b8d6"},
 ]
 
 [package.dependencies]
-elementpath = ">=4.4.0,<5.0.0"
+elementpath = ">=5.1.3,<6.0.0"
 
 [package.extras]
 codegen = ["jinja2"]
-dev = ["coverage", "flake8", "lxml", "lxml-stubs", "memory_profiler", "mypy", "tox", "xmlschema[docs]"]
+dev = ["coverage", "flake8", "lxml", "lxml-stubs", "mypy", "psutil", "tox", "xmlschema[docs]"]
 docs = ["jinja2", "sphinx", "sphinx_rtd_theme"]
 
 [[package]]
@@ -4584,4 +4585,4 @@ redis = ["redis"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.10"
-content-hash = "612c67bc64f40d3f7be3e184c5650ebf57c55244b26d62b3bc34d0159e72f4cb"
+content-hash = "e7ffca3be19900cf4173881fe246fc8da8c03fc722100c8ff57bd5c82e0103ab"
diff --git a/pyproject.toml b/pyproject.toml
index 1afe2c89..09f95f2b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ defusedxml = ">=0.7.1,<1"
 jinja2 = ">=3.1.6,<4"
 pyyaml = ">=6.0,<7.0"
 rich = ">=13.7,<15"
-xmlschema = ">=3.4.0,<4.0.0"
+xmlschema = ">=4.3.2,<5.0.0"
 jsonschema = ">=4.17,<5"
 # Optional feature sets — install with
 # pain001[api] / pain001[parquet] / pain001[mcp] / pain001[lsp] /