diff --git a/README.md b/README.md
index 0e9312d..4d68ce8 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
 # opam-graph
 
-Visualizes dependencies of "opam switch export" as dot or svg.
+Visualizes dependencies of "opam switch export --full --freeze" as dot or svg.
+
+Note that this project is developed to serve https://builds.robur.coop/ and [builder-web](https://git.robur.coop/robur/builder-web/) and makes hard assumptions on the `--full` and `--freeze` flags passed to `opam switch export.
+Please reach out to us at [Robur](https://robur.coop/Contact) if you have other needs.
diff --git a/opam-graph.opam b/opam-graph.opam
index d10bfb5..bf54ef3 100644
--- a/opam-graph.opam
+++ b/opam-graph.opam
@@ -28,5 +28,5 @@ build: [
 synopsis: "Graphing dependencies of opam packages"
 description: """
 This package outputs dependency graphs (in svg and dot) of opam package
-universes (opam switch export).
+universes (opam switch export --full --freeze).
 """