diff --git a/pyproject.toml b/pyproject.toml
index 4d82ae05480bc7b048da3429551fb81832f5b114..c5f4db1df0d8828b9e378089b9b78af9ce2ca18b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,7 +61,7 @@
     package-dir = {"" = "src"}
 
 [tool.setuptools.dynamic]
-    readme = {file = "README.md"}
+    readme = {file = "README.md", content-type = "text/markdown"}
 
 [project.entry-points."bob.cli"]
     fusion = "bob.fusion.base.script.fusion:fusion"