diff --git a/requirements.txt b/requirements.txt
index 4cfb0227..85febe8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,3 +8,4 @@ tornado>=3.0.2
 wsgiref>=0.1.2
 praw>=2.0.0
 jinja2
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability