diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8de41a71..7ab66c80 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2945,6 +2945,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2386
         - unordered-containers < 0.2.8.0
 
+        # https://github.com/fpco/stackage/issues/2393
+        - HUnit < 1.6.0.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of