diff --git a/tests/python/Makefile b/tests/python/Makefile
index f8a71e41..fed17cf3 100644
--- a/tests/python/Makefile
+++ b/tests/python/Makefile
@@ -1,6 +1,6 @@
 partitioning_tests:
 ifneq ($(CASE),)
-	python partitioning_test.py Tests.$(CASE)
+	python3 partitioning_test.py Tests.$(CASE)
 else
-	python partitioning_test.py
+	python3 partitioning_test.py
 endif
diff --git a/tests/update/check_update.py b/tests/update/check_update.py
index 9ac4db62..4bd740f6 100755
--- a/tests/update/check_update.py
+++ b/tests/update/check_update.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #coding: utf-8
 
 import shutil