diff --git a/setup.cfg b/setup.cfg
index d6e3d4c..c3a41ec 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -42,7 +42,7 @@ test =
     pytest-remotedata
     pytest-astropy-header
 docs =
-    sphinx<7
+    sphinx<8
     numpydoc
     sphinx_rtd_theme