diff --git a/build-constraints.yaml b/build-constraints.yaml
index f7183923..6122c219 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2097,6 +2097,8 @@ packages:
         - servant-docs < 0.5
         - servant-mock < 0.5
         - servant-server < 0.5
+        # requires servant-server-0.5
+        - dixi < 0.6.9.0
 
         # https://github.com/fpco/stackage/issues/1291
         - hjsmin < 0.2