diff --git a/setup.cfg b/setup.cfg
index 26cc72c..ab7ce39 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -7,6 +7,7 @@ license = BSD
 description = A suite of command-line tools for working with OCDS data
 url = https://github.com/open-contracting/ocdskit
 long_description = file: README.rst
+long_description_content_type = text/x-rst
 classifiers =
     License :: OSI Approved :: BSD License
     Operating System :: OS Independent