diff --git a/pyproject.toml b/pyproject.toml
index b4786a0f..949b6e85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ dynamic = ["version"]
 
 [project.readme]
 file = "README.md"
-content-type = "text/x-markdown"
+content-type = "text/markdown"
 
 [project.urls]
 Homepage = "https://github.com/ceph/ceph-devstack"