diff --git a/pyproject.toml b/pyproject.toml
index 5b057f5..d2652c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ description = ""
 authors = [{ name = "Enalean team" }]
 requires-python = ">=3.13"
 dependencies = [
-    "Sphinx>=8.2.3,<9",
+    "Sphinx>=9.1,<10",
     "sphinx-rtd-theme>=3.0.2,<4",
     "sphinxcontrib-jquery>=4.1,<5",
 ]
diff --git a/uv.lock b/uv.lock
index bae9d58..cd779da 100644
--- a/uv.lock
+++ b/uv.lock
@@ -161,12 +161,12 @@ wheels = [
 ]
 
 [[package]]
-name = "roman-numerals-py"
-version = "3.1.0"
+name = "roman-numerals"
+version = "4.1.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/30/76/48fd56d17c5bdbdf65609abbc67288728a98ed4c02919428d4f52d23b24b/roman_numerals_py-3.1.0.tar.gz", hash = "sha256:be4bf804f083a4ce001b5eb7e3c0862479d10f94c936f6c4e5f250aa5ff5bd2d", size = 9017, upload-time = "2025-02-22T07:34:54.333Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ae/f9/41dc953bbeb056c17d5f7a519f50fdf010bd0553be2d630bc69d1e022703/roman_numerals-4.1.0.tar.gz", hash = "sha256:1af8b147eb1405d5839e78aeb93131690495fe9da5c91856cb33ad55a7f1e5b2", size = 9077, upload-time = "2025-12-17T18:25:34.381Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/53/97/d2cbbaa10c9b826af0e10fdf836e1bf344d9f0abb873ebc34d1f49642d3f/roman_numerals_py-3.1.0-py3-none-any.whl", hash = "sha256:9da2ad2fb670bcf24e81070ceb3be72f6c11c440d73bd579fbeca1e9f330954c", size = 7742, upload-time = "2025-02-22T07:34:52.422Z" },
+    { url = "https://files.pythonhosted.org/packages/04/54/6f679c435d28e0a568d8e8a7c0a93a09010818634c3c3907fc98d8983770/roman_numerals-4.1.0-py3-none-any.whl", hash = "sha256:647ba99caddc2cc1e55a51e4360689115551bf4476d90e8162cf8c345fe233c7", size = 7676, upload-time = "2025-12-17T18:25:33.098Z" },
 ]
 
 [[package]]
@@ -180,7 +180,7 @@ wheels = [
 
 [[package]]
 name = "sphinx"
-version = "8.2.3"
+version = "9.1.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "alabaster" },
@@ -192,7 +192,7 @@ dependencies = [
     { name = "packaging" },
     { name = "pygments" },
     { name = "requests" },
-    { name = "roman-numerals-py" },
+    { name = "roman-numerals" },
     { name = "snowballstemmer" },
     { name = "sphinxcontrib-applehelp" },
     { name = "sphinxcontrib-devhelp" },
@@ -201,23 +201,23 @@ dependencies = [
     { name = "sphinxcontrib-qthelp" },
     { name = "sphinxcontrib-serializinghtml" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/38/ad/4360e50ed56cb483667b8e6dadf2d3fda62359593faabbe749a27c4eaca6/sphinx-8.2.3.tar.gz", hash = "sha256:398ad29dee7f63a75888314e9424d40f52ce5a6a87ae88e7071e80af296ec348", size = 8321876, upload-time = "2025-03-02T22:31:59.658Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/cd/bd/f08eb0f4eed5c83f1ba2a3bd18f7745a2b1525fad70660a1c00224ec468a/sphinx-9.1.0.tar.gz", hash = "sha256:7741722357dd75f8190766926071fed3bdc211c74dd2d7d4df5404da95930ddb", size = 8718324, upload-time = "2025-12-31T15:09:27.646Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/31/53/136e9eca6e0b9dc0e1962e2c908fbea2e5ac000c2a2fbd9a35797958c48b/sphinx-8.2.3-py3-none-any.whl", hash = "sha256:4405915165f13521d875a8c29c8970800a0141c14cc5416a38feca4ea5d9b9c3", size = 3589741, upload-time = "2025-03-02T22:31:56.836Z" },
+    { url = "https://files.pythonhosted.org/packages/73/f7/b1884cb3188ab181fc81fa00c266699dab600f927a964df02ec3d5d1916a/sphinx-9.1.0-py3-none-any.whl", hash = "sha256:c84fdd4e782504495fe4f2c0b3413d6c2bf388589bb352d439b2a3bb99991978", size = 3921742, upload-time = "2025-12-31T15:09:25.561Z" },
 ]
 
 [[package]]
 name = "sphinx-rtd-theme"
-version = "3.0.2"
+version = "3.1.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "docutils" },
     { name = "sphinx" },
     { name = "sphinxcontrib-jquery" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/91/44/c97faec644d29a5ceddd3020ae2edffa69e7d00054a8c7a6021e82f20335/sphinx_rtd_theme-3.0.2.tar.gz", hash = "sha256:b7457bc25dda723b20b086a670b9953c859eab60a2a03ee8eb2bb23e176e5f85", size = 7620463, upload-time = "2024-11-13T11:06:04.545Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/84/68/a1bfbf38c0f7bccc9b10bbf76b94606f64acb1552ae394f0b8285bfaea25/sphinx_rtd_theme-3.1.0.tar.gz", hash = "sha256:b44276f2c276e909239a4f6c955aa667aaafeb78597923b1c60babc76db78e4c", size = 7620915, upload-time = "2026-01-12T16:03:31.17Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/85/77/46e3bac77b82b4df5bb5b61f2de98637724f246b4966cfc34bc5895d852a/sphinx_rtd_theme-3.0.2-py2.py3-none-any.whl", hash = "sha256:422ccc750c3a3a311de4ae327e82affdaf59eb695ba4936538552f3b00f4ee13", size = 7655561, upload-time = "2024-11-13T11:06:02.094Z" },
+    { url = "https://files.pythonhosted.org/packages/87/c7/b5c8015d823bfda1a346adb2c634a2101d50bb75d421eb6dcb31acd25ebc/sphinx_rtd_theme-3.1.0-py2.py3-none-any.whl", hash = "sha256:1785824ae8e6632060490f67cf3a72d404a85d2d9fc26bce3619944de5682b89", size = 7655617, upload-time = "2026-01-12T16:03:28.101Z" },
 ]
 
 [[package]]
@@ -298,7 +298,7 @@ dependencies = [
 
 [package.metadata]
 requires-dist = [
-    { name = "sphinx", specifier = ">=8.2.3,<9" },
+    { name = "sphinx", specifier = ">=9.1,<10" },
     { name = "sphinx-rtd-theme", specifier = ">=3.0.2,<4" },
     { name = "sphinxcontrib-jquery", specifier = ">=4.1,<5" },
 ]