diff --git a/requirements.txt b/requirements.txt
index 2e503ddb..44ed09d2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,6 @@ gunicorn==20.1.0
 pycodestyle==2.9.1
 pydocstyle==6.1.1
 requests==2.28.1
-Sphinx==5.2.3
+Sphinx==5.3.0
 Werkzeug==2.0.3
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability