diff --git a/poetry.lock b/poetry.lock
index 094ccb53..c3e72a1b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1441,6 +1441,20 @@ html5 = ["html5lib"]
 htmlsoup = ["BeautifulSoup4"]
 source = ["Cython (>=3.0.7)"]
 
+[[package]]
+name = "lxml-stubs"
+version = "0.5.1"
+description = "Type annotations for the lxml package"
+optional = false
+python-versions = "*"
+files = [
+    {file = "lxml-stubs-0.5.1.tar.gz", hash = "sha256:e0ec2aa1ce92d91278b719091ce4515c12adc1d564359dfaf81efa7d4feab79d"},
+    {file = "lxml_stubs-0.5.1-py3-none-any.whl", hash = "sha256:1f689e5dbc4b9247cb09ae820c7d34daeb1fdbd1db06123814b856dae7787272"},
+]
+
+[package.extras]
+test = ["coverage[toml] (>=7.2.5)", "mypy (>=1.2.0)", "pytest (>=7.3.0)", "pytest-mypy-plugins (>=1.10.1)"]
+
 [[package]]
 name = "makim"
 version = "1.12.0"
@@ -3565,4 +3579,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = ">3.8.1,<4"
-content-hash = "76fc8b35a6a3f4424a9f99d81aff55ec46203532f3486738e86e0763c87e10ca"
+content-hash = "2e636c797a1935f1305279257081cad794a2ebb63809c64c0c04ec2a7dd0b3f8"
diff --git a/pyproject.toml b/pyproject.toml
index ac4d2d0f..6103e61f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,6 +42,7 @@ mkdocstrings-python = ">=1.1.2"
 jupyterlab = ">=4.0.5"
 makim = "1.12.0"
 requests-cache = ">=1"
+lxml-stubs = "^0.5.1"
 
 [tool.pytest.ini_options]
 testpaths = [