diff --git a/pyproject.toml b/pyproject.toml
index 9118f91..a32f463 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ toltec = ["*.py.typed"]
 
 [tool.setuptools.dynamic]
 dependencies = {file = ["requirements.txt"]}
-readme = {file= ["README.md"]}
+readme = {file= ["README.md"], content-type = "text/markdown"}
 
 [build-system]
 requires = [