diff --git a/megalist_dataflow/requirements.txt b/megalist_dataflow/requirements.txt
index 2bcf012e..20c828e6 100644
--- a/megalist_dataflow/requirements.txt
+++ b/megalist_dataflow/requirements.txt
@@ -1,5 +1,5 @@
 googleads==24.1.0
-httplib2==0.17.4
+httplib2==0.21.0
 protobuf==3.13.0
 google-api-python-client==1.12.8
 google-cloud-core==1.4.1