diff --git a/pyproject.toml b/pyproject.toml
index d4809fb..51375ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ pytest-randomly = "3.16.0"
 optional = true
 
 [tool.poetry.group.docs.dependencies]
-sphinx = "^7.0.0"
+sphinx = "^8.0.0"
 sphinxcontrib-bibtex = "^2.5.0"
 sphinx-gallery = "^0.18.0"
 pydata-sphinx-theme = "^0.16.0"