diff --git a/setup.cfg b/setup.cfg
index 716f847..b40ce79 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -7,6 +7,7 @@ license = BSD
 description = Tools for data standards that use JSON Schema and CSV codelists
 url = https://github.com/open-contracting/jscc
 long_description = file: README.rst
+long_description_content_type = text/x-rst
 classifiers =
     License :: OSI Approved :: BSD License
     Operating System :: OS Independent