diff --git a/Makefile b/Makefile
index 5caf9b6a..712d54ca 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 # This Makefile is only used by developers.
-PYVER:=2.7
+PYVER:=3
 PYTHON?=python$(PYVER)
 VERSION:=$(shell $(PYTHON) setup.py --version)
 PLATFORM:=$(shell $(PYTHON) -c "from __future__ import print_function; from distutils.util import get_platform; print(get_platform())")