diff --git a/setup.py b/setup.py
index 5cd7e21a..73f97bb0 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,9 @@
 ]
 if sys.version_info < (3, 5):
     install_requires.append('typing')
-if sys.version_info < (3, 6):
+if sys.version_info < (3, 4):
+    install_requires.append('pathlib2==2.3.0')
+elif sys.version_info < (3, 6):
     install_requires.append('pathlib2')
 
 tests_require = ['pytest', 'mock']