diff --git a/python/requirements.txt b/python/requirements.txt
index 6db6a087ac..165fc39f78 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -7,3 +7,4 @@ construct>=2.9,!=2.10.55
 typing_extensions>=3.10
 dataclasses ; python_version<'3.7'
 simple-rlp>=0.1.2 ; python_version>='3.7'
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability