diff --git a/appengine/flexible/twilio/requirements.txt b/appengine/flexible/twilio/requirements.txt
index 0854e5a8ac4..e8cc6587145 100644
--- a/appengine/flexible/twilio/requirements.txt
+++ b/appengine/flexible/twilio/requirements.txt
@@ -3,4 +3,4 @@ Flask==2.3.3; python_version < '3.7'
 Werkzeug==3.0.1; python_version > '3.6'
 Werkzeug==2.3.7; python_version < '3.7'
 gunicorn==20.1.0
-twilio==8.2.1
+twilio==9.0.0
diff --git a/appengine/flexible_python37_and_earlier/twilio/requirements.txt b/appengine/flexible_python37_and_earlier/twilio/requirements.txt
index bd9c7a3909b..2f6981b25f9 100644
--- a/appengine/flexible_python37_and_earlier/twilio/requirements.txt
+++ b/appengine/flexible_python37_and_earlier/twilio/requirements.txt
@@ -1,6 +1,6 @@
 Flask==3.0.0; python_version > '3.6'
 Flask==2.0.3; python_version < '3.7'
 gunicorn==20.1.0
-twilio==8.2.1
+twilio==9.0.0
 Werkzeug==3.0.1; python_version >= '3.7'
 Werkzeug==2.3.7; python_version < '3.7'