diff --git a/requirements_travis.txt b/requirements_travis.txt
index b0aaeff51c85..22e05c1d7676 100644
--- a/requirements_travis.txt
+++ b/requirements_travis.txt
@@ -1,3 +1,4 @@
 tox
 python-coveralls
 tox-travis
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability