diff --git a/app_engine_standard/requirements.txt b/app_engine_standard/requirements.txt
index 4712fcd..957cc8f 100644
--- a/app_engine_standard/requirements.txt
+++ b/app_engine_standard/requirements.txt
@@ -3,3 +3,4 @@ textgenrnn==2.0.0
 ru-proverbs==1.1.0
 flask==2.0.1
 gunicorn==20.1.0
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability