diff --git a/requirements.txt b/requirements.txt
index 93e9f94..2559ced 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,5 +10,5 @@ pytz==2020.5
 Rx==3.1.1
 six==1.15.0
 smbus==1.1.post2
-urllib3==1.26.5
+urllib3==1.26.17
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability