diff --git a/requirements.txt b/requirements.txt
index b04242b..c735b7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ setuptools
 tegro_money
 requests
 hmac
-pydantic
\ No newline at end of file
+pydantic
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file