diff --git a/README.md b/README.md
index 089400a..7cfb296 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,10 @@ Linux template. The upstream repo uses GitLab's CI to build and deploy packages
 targetting multiple Alpine Linux versions. QubesOS releases are tracked using
 branches.
 
+Note for `main` branch: This is currently tracking r4.3 packages, thus are
+experimental. Use this branch at your own risk. For latest r4.2 packages,
+navigate to that branch.
+
 #### Template builder
 The template builder is housed in its [own repo](https://lab.ilot.io/ayakael/qubes-builder-alpine).
 RPMs are built in-pipeline using the build artifacts produced by this repo. These RPMs facilitate