diff --git a/requirements.txt b/requirements.txt
index 4c41307..c017f64 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 flask==2.1.1
 python-dotenv==0.12.0
 twilio==6.38.0
-pytest==5.4.1
\ No newline at end of file
+pytest==5.4.1
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file