1 files changed, 1 insertions, 1 deletions

diff --git a/setup.cfg b/setup.cfg
index 5e0b244..57889c3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -50,7 +50,7 @@ tests =
     pytest>=6.0.0,<7.0.0
     coverage[toml]==5.0.4
 dev =
-    sphinx
+    sphinx>=4.5.0,<5.0.0
     sphinx-rtd-theme
     zope.interface
     cryptography>=3.3.1