diff --git a/tools/bigtable-backup/requirements.txt b/tools/bigtable-backup/requirements.txt
index 8393e591b8b1e..7fa963762e481 100644
--- a/tools/bigtable-backup/requirements.txt
+++ b/tools/bigtable-backup/requirements.txt
@@ -1,2 +1,2 @@
 -e git://github.com/prometheus/client_python.git@a8f5c80f651ea570577c364203e0edbef67db727#egg=prometheus_client
-pytz==2019.1
+pytz==2019.3