diff --git a/setup.py b/setup.py
index da05ae64..6f83df71 100644
--- a/setup.py
+++ b/setup.py
@@ -10,6 +10,7 @@
     license='MIT',
     description='Pure Python implementation of the Spark RDD interface.',
     long_description=open('README.rst').read(),
+    long_description_content_type='text/x-rst',
     author='pysparkling contributors',
     url='https://github.com/kbc-opensource/pysparkling',