diff --git a/build-constraints.yaml b/build-constraints.yaml
index 435ec3b8..6e2da2fc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6750,6 +6750,7 @@ packages:
 
       # https://github.com/commercialhaskell/stackage/issues/6237
       - lucid < 2.9.13
+      - mmark < 0.0.7.4
 
       # https://github.com/commercialhaskell/stackage/issues/6243
       - jose < 0.9