diff --git a/releasenotes/notes/change-libsass-pyscss-120e0e847470261b.yaml b/releasenotes/notes/change-libsass-pyscss-120e0e847470261b.yaml
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+---
+prelude: >
+    Horizon is switching away from pyscss and django-pyscss, and now uses the
+    libsass library for partsing the scss files instead.
+upgrade:
+  - |
+    Horizon now uses the libsass library. Horizon packagers now need to include
+    python3-libsass in the dependency list.
+deprecations:
+  - |
+    Horizon no longer uses the pyscss and django-pyscss libraries. They can be
+    safely removed from the dependency lists by Horizon packagers.