diff --git a/build-constraints.yaml b/build-constraints.yaml
index b570bef6..3efe84bb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3312,6 +3312,9 @@ packages:
 
         # https://github.com/LeventErkok/sbv/issues/315
         - sbv < 7.0
+
+        # https://github.com/fpco/stackage/issues/2656
+        - happstack-server < 7.5.0
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of