diff --git a/build-constraints.yaml b/build-constraints.yaml
index 30b6e569..3db09ddf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3128,6 +3128,9 @@ packages:
 
         # https://github.com/fpco/stackage/issues/3110
         - megaparsec < 6.3.0
+
+        # https://github.com/fpco/stackage/issues/3111
+        - markdown-unlit < 0.5.0
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of