diff --git a/requirements.txt b/requirements.txt
index 146378c..560e848 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,4 @@ yapf==0.16.2
 jsbeautifier==1.6.14
 lxml==4.2.3
 inflection==0.3.1
+certifi>=2023.7.22 # not directly required, pinned by Snyk to avoid a vulnerability