diff --git a/build-constraints.yaml b/build-constraints.yaml
index c1a40e66..4744cc09 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8402,6 +8402,9 @@ packages:
         - aeson < 2.2.0
         - aeson-pretty < 0.8.10
         - aeson-extra < 0.5.1.3
+
+        # https://github.com/commercialhaskell/stackage/issues/7052
+        - markdown-unlit < 0.6
     # end of Stackage upper bounds
 # end of packages