diff --git a/docs/conf.py b/docs/conf.py
index 6108549b..86ca68f0 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -82,7 +82,7 @@ def __getattr__(cls, name):
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3ff46cd5..219c53c3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-numpydoc<1.6
-sphinx==4.5.0
-sphinx_rtd_theme==1.0.0
+numpydoc==1.7.0
+sphinx==7.0.0
+sphinx_rtd_theme==3.0.0
 readthedocs-sphinx-search==0.3.2
diff --git a/pyproject.toml b/pyproject.toml
index f550ebd7..45091b96 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dev = [
     "pytest-xdist >= 2.5.0",
     "pylint >= 2.13.7",
     "black >= 22.3.0",
-    "sphinx >= 4.5.0",
+    "sphinx >= 7.0.0",
 ]
 
 [project.urls]