diff --git a/requirements.txt b/requirements.txt
index 65bd5b5..69349b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 selenium
+h11>=0.16.0 # not directly required, pinned by Snyk to avoid a vulnerability
 zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
 urllib3>=2.6.3 # not directly required, pinned by Snyk to avoid a vulnerability