diff --git a/dev-requirements.txt b/dev-requirements.txt
index 81012da9..f4052794 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -17,3 +17,4 @@ selenium
 semgrep; platform_system == 'Linux'
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
 webdriver-manager
+h11>=0.16.0 # not directly required, pinned by Snyk to avoid a vulnerability