diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9957cc9f..99ae87dc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1843,6 +1843,9 @@ packages:
         # https://github.com/fpco/stackage/issues/1074
         - http2 < 1.4
 
+        # https://github.com/fpco/stackage/issues/1084
+        - cmark < 0.5
+
 # end of packages