diff --git a/pyproject.toml b/pyproject.toml
index aac75430c..f4f860451 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ bench = [
     "virtualenv~=20.22",
 ]
 docs = [
-    "Sphinx~=6.2",
+    "Sphinx>=6.2,<8.0",
     "ipython~=8.12",
     "jinja2<4.0",
     "jupyter~=1.0",