diff --git a/readme.md b/readme.md
index 629f851..4d589a8 100644
--- a/readme.md
+++ b/readme.md
@@ -52,4 +52,5 @@ Treefile → apt-ostree → Container Image → Registry Upload → deb-bootc-im
 
 ## Distrobution build tools
 [debos](https://github.com/go-debos/debos) is a tool-chain for simplifying the
-process of building a Debian-based OS image.
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+process of building a Debian-based OS image.\
+[Fedora coreos-assembler](https://github.com/coreos/coreos-assembler) aka COSA
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