diff --git a/requirements.txt b/requirements.txt
index 6547827..e69c313 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ bumpversion
 flake8
 tox
 coverage
-Sphinx
+Sphinx==7.2.3
 cryptography
 PyYAML
 pytest