diff --git a/setup.py b/setup.py
index 13affb5..2508c0a 100755
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,11 @@
 #!/usr/bin/env python3
 
+import sys
 from setuptools import setup
 
+if sys.version_info < (3,3):
+    sys.exit('Instaloader requires Python >= 3.3.')
+
 setup(
     name='instaloader',
     version='1.1',