diff --git a/poetry.lock b/poetry.lock
index 28452b4..631fe41 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1380,13 +1380,13 @@ test = ["cython (>=3.0)", "defusedxml (>=0.7.1)", "pytest (>=8.0)", "setuptools
 
 [[package]]
 name = "sphinx-immaterial"
-version = "0.11.14"
+version = "0.12.4"
 description = "Adaptation of mkdocs-material theme for the Sphinx documentation system"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
 files = [
-    {file = "sphinx_immaterial-0.11.14-py3-none-any.whl", hash = "sha256:dd1a30614c8ecaa931155189e7d54f211232e31cf3e5c6d28ba9f04a4817f0a3"},
-    {file = "sphinx_immaterial-0.11.14.tar.gz", hash = "sha256:e1e8ba93c78a3e007743fede01a3be43f5ae97c5cc19b8e2a4d2aa058abead61"},
+    {file = "sphinx_immaterial-0.12.4-py3-none-any.whl", hash = "sha256:09224ad18a39204e0a05168e027d0b6af1b85be33c666c711092ae91229e6ac7"},
+    {file = "sphinx_immaterial-0.12.4.tar.gz", hash = "sha256:3b2128114040e96539cf4eaaa924b80bf4944af363e4e9954a6290fa7549aeaa"},
 ]
 
 [package.dependencies]
@@ -1399,6 +1399,7 @@ sphinx = ">=4.5"
 typing-extensions = "*"
 
 [package.extras]
+black = ["black"]
 clang-format = ["clang-format"]
 cpp = ["libclang"]
 json = ["pyyaml"]
@@ -1583,4 +1584,4 @@ docs = []
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9.0"
-content-hash = "ef04e9b744e8bf1eadbb391c15fe68d11e98112864fb30fcb3cd0607280201d0"
+content-hash = "04e8a4e28d381d83214ac6d31174af00cfd2b099c8b34e9bbfff01e9b4508ccc"
diff --git a/pyproject.toml b/pyproject.toml
index c5b2642..ce24fa3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ bump2version = "^1.0.1"
 
 [tool.poetry.group.docs.dependencies]
 sphinx = ">=5.3,<8.0"
-sphinx-immaterial = "^0.11.0"
+sphinx-immaterial = ">=0.11,<0.13"
 
 [tool.pytest.ini_options]
 addopts = """