diff --git a/README.md b/README.rst
similarity index 100%
rename from README.md
rename to README.rst
diff --git a/setup.py b/setup.py
index ad2ab6a..355cf53 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
     install_requires=requirements,
     setup_requires=requirements,
     python_requires=">=3.10.0",
-    long_description=open("README.md", encoding="utf-8").read(),
+    long_description=open("README.rst", encoding="utf-8").read(),
     long_description_content_type='text/markdown',
     url='https://github.com/quantumlib/TypedUnits',
     author='The TUnits Authors',