diff --git a/tools/run_tests/python_utils/port_server.py b/tools/run_tests/python_utils/port_server.py
index 10e9cf4c1a1..9860b928081 100755
--- a/tools/run_tests/python_utils/port_server.py
+++ b/tools/run_tests/python_utils/port_server.py
@@ -46,7 +46,7 @@ import platform
 # increment this number whenever making a change to ensure that
 # the changes are picked up by running CI servers
 # note that all changes must be backwards compatible
-_MY_VERSION = 19
+_MY_VERSION = 20
 
 
 if len(sys.argv) == 2 and sys.argv[1] == 'dump_version':