diff --git a/dialogflow/requirements.txt b/dialogflow/requirements.txt
index a491bd9a2dee..241be4b65c01 100644
--- a/dialogflow/requirements.txt
+++ b/dialogflow/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-dialogflow==2.13.0
-Flask==2.0.3
+Flask==2.1.0