diff --git a/Makefile b/Makefile
index b8f4148..5a60e04 100644
--- a/Makefile
+++ b/Makefile
@@ -125,7 +125,7 @@ bots:
 # checkout Cockpit's test API; this has no API stability guarantee, so check out a stable tag
 # when you start a new project, use the latest relese, and update it from time to time
 test/common:
-	git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 170
+	git fetch --depth=1 https://github.com/cockpit-project/cockpit.git 171
 	git checkout --force FETCH_HEAD -- test/common
 	git reset test/common
 
diff --git a/test/check-application b/test/check-application
index 34c90e6..40431e2 100755
--- a/test/check-application
+++ b/test/check-application
@@ -1,5 +1,4 @@
-#!/usr/bin/python
-# coding: UTF-8
+#!/usr/bin/python3
 # Run this with --help to see available options for tracing and debugging
 # See https://github.com/cockpit-project/cockpit/blob/master/test/common/testlib.py
 # "class Browser" and "class MachineCase" for the available API.