diff --git a/pyproject.toml b/pyproject.toml
index 58e75e53..a04aea47 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ cov = [
 docs = [
   "furo",
   "myst-parser",
-  "sphinx",
+  "sphinx<7.2",
   "zope.interface",
   "sphinx-notfound-page",
   "sphinxcontrib-towncrier",