diff --git a/pyproject.toml b/pyproject.toml
index c768311..47a9c8d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ types-setuptools = "*"
 optional = true
 
 [tool.poetry.group.docs.dependencies]
-sphinx = "^7.2.6"
+sphinx = "^8.1.3"
 sphinx-rtd-theme = "^3.0.2"
 myst-parser = "^4.0.1"
 sphinxcontrib-napoleon = "^0.7"