diff --git a/docs/source/conf.py b/docs/source/conf.py
index a56d3fe538..464455da27 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -23,7 +23,7 @@
 
 # If your documentation needs a minimal Sphinx version, state it here.
 #
-needs_sphinx = "7.2"
+needs_sphinx = "8.1"
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
@@ -46,7 +46,7 @@
 
 # General information about the project.
 project = "cognite-sdk"
-copyright = "2019, Cognite AS"
+copyright = "2017-%Y, Cognite AS"
 author = "Erlend Vollset"
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/poetry.lock b/poetry.lock
index ef357e0935..fa891daf60 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.4 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.3.2 and should not be changed by hand.
 
 [[package]]
 name = "alabaster"
@@ -2447,6 +2447,7 @@ files = [
     {file = "pyyaml-6.0.3-cp39-cp39-win_amd64.whl", hash = "sha256:2e71d11abed7344e42a8849600193d15b6def118602c4c176f748e4583246007"},
     {file = "pyyaml-6.0.3.tar.gz", hash = "sha256:d76623373421df22fb4cf8817020cbb7ef15c725b9d5e45f17e189bfc384190f"},
 ]
+markers = {main = "extra == \"yaml\" or extra == \"all\""}
 
 [[package]]
 name = "readme-renderer"
@@ -2726,18 +2727,18 @@ files = [
 
 [[package]]
 name = "sphinx"
-version = "7.4.7"
+version = "8.1.3"
 description = "Python documentation generator"
 optional = false
-python-versions = ">=3.9"
+python-versions = ">=3.10"
 groups = ["docs"]
 files = [
-    {file = "sphinx-7.4.7-py3-none-any.whl", hash = "sha256:c2419e2135d11f1951cd994d6eb18a1835bd8fdd8429f9ca375dc1f3281bd239"},
-    {file = "sphinx-7.4.7.tar.gz", hash = "sha256:242f92a7ea7e6c5b406fdc2615413890ba9f699114a9c09192d7dfead2ee9cfe"},
+    {file = "sphinx-8.1.3-py3-none-any.whl", hash = "sha256:09719015511837b76bf6e03e42eb7595ac8c2e41eeb9c29c5b755c6b677992a2"},
+    {file = "sphinx-8.1.3.tar.gz", hash = "sha256:43c1911eecb0d3e161ad78611bc905d1ad0e523e4ddc202a58a821773dc4c927"},
 ]
 
 [package.dependencies]
-alabaster = ">=0.7.14,<0.8.0"
+alabaster = ">=0.7.14"
 babel = ">=2.13"
 colorama = {version = ">=0.4.6", markers = "sys_platform == \"win32\""}
 docutils = ">=0.20,<0.22"
@@ -2747,17 +2748,17 @@ packaging = ">=23.0"
 Pygments = ">=2.17"
 requests = ">=2.30.0"
 snowballstemmer = ">=2.2"
-sphinxcontrib-applehelp = "*"
-sphinxcontrib-devhelp = "*"
-sphinxcontrib-htmlhelp = ">=2.0.0"
-sphinxcontrib-jsmath = "*"
-sphinxcontrib-qthelp = "*"
+sphinxcontrib-applehelp = ">=1.0.7"
+sphinxcontrib-devhelp = ">=1.0.6"
+sphinxcontrib-htmlhelp = ">=2.0.6"
+sphinxcontrib-jsmath = ">=1.0.1"
+sphinxcontrib-qthelp = ">=1.0.6"
 sphinxcontrib-serializinghtml = ">=1.1.9"
 tomli = {version = ">=2", markers = "python_version < \"3.11\""}
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=6.0)", "importlib-metadata (>=6.0)", "mypy (==1.10.1)", "pytest (>=6.0)", "ruff (==0.5.2)", "sphinx-lint (>=0.9)", "tomli (>=2)", "types-docutils (==0.21.0.20240711)", "types-requests (>=2.30.0)"]
+lint = ["flake8 (>=6.0)", "mypy (==1.11.1)", "pyright (==1.1.384)", "pytest (>=6.0)", "ruff (==0.6.9)", "sphinx-lint (>=0.9)", "tomli (>=2)", "types-Pillow (==10.2.0.20240822)", "types-Pygments (==2.18.0.20240506)", "types-colorama (==0.4.15.20240311)", "types-defusedxml (==0.7.0.20240218)", "types-docutils (==0.21.0.20241005)", "types-requests (==2.32.0.20240914)", "types-urllib3 (==1.26.25.14)"]
 test = ["cython (>=3.0)", "defusedxml (>=0.7.1)", "pytest (>=8.0)", "setuptools (>=70.0)", "typing_extensions (>=4.9)"]
 
 [[package]]
@@ -3260,4 +3261,4 @@ yaml = ["PyYAML"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.10"
-content-hash = "2ea3c6c81fe97514e9a29abd97ac04bf483f5ad8f90af2ad1243c4da28d20832"
+content-hash = "c7688f7751d6cbf8fcd35fc2657624ee32a6aa6cae917e78c6585c38eda88f9d"
diff --git a/pyproject.toml b/pyproject.toml
index a17e165775..ee9ce33094 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -87,7 +87,7 @@ tenacity = "^9.1.2"
 ruff = "0.13.2"
 
 [tool.poetry.group.docs.dependencies]
-sphinx = ">=7.2"
+sphinx = ">=8.1"
 sphinx-rtd-theme = ">=1"
 
 [build-system]