diff --git a/requirements.txt b/requirements.txt
index bbb34a05544651167bdad77ebc21027516627d86..48577243c5bee336c5d584fc78ae8d525ea9c391 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,3 +17,4 @@ flake8
 coverage
 pyaml
 sphinx
+certifi>=2022.12.7 # not directly required, pinned by Snyk to avoid a vulnerability