diff --git a/samples_2/kinesis-analytics-process-kpl-record/requirements.txt b/samples_2/kinesis-analytics-process-kpl-record/requirements.txt
index 8f39071..8d30a43 100644
--- a/samples_2/kinesis-analytics-process-kpl-record/requirements.txt
+++ b/samples_2/kinesis-analytics-process-kpl-record/requirements.txt
@@ -1 +1 @@
-protobuf==3.5.1
+protobuf==3.18.3