diff --git a/requirements.txt b/requirements.txt
index 1cc81728..4d364071 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,6 @@ gunicorn==20.1.0
 pycodestyle==2.10.0
 pydocstyle==6.2.2
 requests==2.28.2
-Sphinx==5.3.0
+Sphinx==6.1.3
 Werkzeug==2.0.3
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability