diff --git a/version.py b/version.py
index b788bc5b3b..7c59f21f23 100644
--- a/version.py
+++ b/version.py
@@ -1,2 +1,2 @@
 ZULIP_VERSION = "1.5.1+git"
-PROVISION_VERSION = '4.18'
+PROVISION_VERSION = '4.19'