diff --git a/dataflow/flex-templates/pipeline_with_dependencies/requirements.txt b/dataflow/flex-templates/pipeline_with_dependencies/requirements.txt
index bef166bb943..5fe242ba6b2 100644
--- a/dataflow/flex-templates/pipeline_with_dependencies/requirements.txt
+++ b/dataflow/flex-templates/pipeline_with_dependencies/requirements.txt
@@ -175,7 +175,7 @@ httplib2==0.22.0
     #   google-apitools
     #   google-auth-httplib2
     #   oauth2client
-idna==3.7
+idna==3.15
     # via requests
 js2py==0.74
     # via apache-beam