diff --git a/build-constraints.yaml b/build-constraints.yaml
index 588ee3e8..fe27c457 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1045,6 +1045,7 @@ packages:
         - wl-pprint
         - leveldb-haskell
         - system-argv0
+        - markdown-unlit
 
     "Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk> @Fuuzetsu":
         - aeson-schema