diff --git a/README.md b/README.md
index 1ba59af..5035d89 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ A WIP common main image for all other Ucore images.
 
 This is an OCI image of [Fedora CoreOS](https://getfedora.org/coreos/) with quality of life improvments.
 
+### WARNING: not yet tested
 
 ## Features