diff --git a/build-constraints.yaml b/build-constraints.yaml
index c8be19a7..af23c153 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3210,6 +3210,9 @@ packages:
         # https://github.com/fpco/stackage/issues/3079
         - generic-deriving < 1.12
 
+        # https://github.com/mrkkrp/mmark-ext/issues/5
+        - mmark < 0.0.2.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of