diff --git a/requirements-dev.txt b/requirements-dev.txt
index 93dd1c3..5a66bed 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,3 +5,4 @@ pytest>=6.2.1
 twine==3.3.0
 pypandoc>=1.5
 wheel>=0.31.0
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability