diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7ee1627b..544cba55 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1044,6 +1044,7 @@ packages:
         - wl-pprint
         - leveldb-haskell
         - system-argv0
+        - markdown-unlit
 
     "Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk> @Fuuzetsu":
         - aeson-schema