diff --git a/poetry.lock b/poetry.lock
index 86dab5128..9d5f82fea 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -4476,20 +4476,20 @@ files = [
 
 [[package]]
 name = "sphinx"
-version = "6.2.1"
+version = "7.1.2"
 description = "Python documentation generator"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "Sphinx-6.2.1.tar.gz", hash = "sha256:6d56a34697bb749ffa0152feafc4b19836c755d90a7c59b72bc7dfd371b9cc6b"},
-    {file = "sphinx-6.2.1-py3-none-any.whl", hash = "sha256:97787ff1fa3256a3eef9eda523a63dbf299f7b47e053cfcf684a1c2a8380c912"},
+    {file = "sphinx-7.1.2-py3-none-any.whl", hash = "sha256:d170a81825b2fcacb6dfd5a0d7f578a053e45d3f2b153fecc948c37344eb4cbe"},
+    {file = "sphinx-7.1.2.tar.gz", hash = "sha256:780f4d32f1d7d1126576e0e5ecc19dc32ab76cd24e950228dcf7b1f6d3d9e22f"},
 ]
 
 [package.dependencies]
 alabaster = ">=0.7,<0.8"
 babel = ">=2.9"
 colorama = {version = ">=0.4.5", markers = "sys_platform == \"win32\""}
-docutils = ">=0.18.1,<0.20"
+docutils = ">=0.18.1,<0.21"
 imagesize = ">=1.3"
 importlib-metadata = {version = ">=4.8", markers = "python_version < \"3.10\""}
 Jinja2 = ">=3.0"
@@ -5268,4 +5268,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "b6be56196fe62229b851b879b898537e40215c818f005777c739c0c35c6554bb"
+content-hash = "22e485f79df44a580d6898f7c22e82f07855293ff00429803774fed3224da7df"
diff --git a/pyproject.toml b/pyproject.toml
index 1f7b2bde0..0de873822 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ mkfeyndiag = "pyfeyn2.mkfeyndiag:main"
 optional = true
 
 [tool.poetry.group.docs.dependencies]
-sphinx = "<7.0.0"
+sphinx = "<8.0.0"
 sphinx-rtd-theme = "*"
 sphinxcontrib-napoleon = "*"
 nbsphinx = "*"