diff --git a/days/021-024-quart-async/cityscape_api/requirements.txt b/days/021-024-quart-async/cityscape_api/requirements.txt
index ae76cab5..f6fcfc93 100644
--- a/days/021-024-quart-async/cityscape_api/requirements.txt
+++ b/days/021-024-quart-async/cityscape_api/requirements.txt
@@ -8,3 +8,5 @@ aiohttp
 aiodns
 cchardet
 
+pycares>=4.9.0 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability