diff --git a/setup.py b/setup.py
index 8c40553..1306416 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ def get_release_command_class():
     return {"release": ReleaseCommand}
 
 
-with open("README.md") as fp:
+with open("README.rst") as fp:
     long_description = fp.read()
 
 
@@ -46,6 +46,7 @@ def get_release_command_class():
         "Library for developers to extract data from Microsoft Excel (tm) spreadsheet files"
     ),
     long_description=long_description,
+    long_description_content_type="text/x-rst",
     license="BSD",
     keywords=["xls", "excel", "spreadsheet", "workbook"],
     python_requires=">=3.5",