diff --git a/build-constraints.yaml b/build-constraints.yaml
index bffa06ef..84587d3d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3234,7 +3234,7 @@ packages:
         - tmp-postgres
         - pg-transact
         - hspec-pg-transact < 0 # compilation failure (against tmp-postgres?)
-        - postgresql-simple-queue
+        - postgresql-simple-queue < 0 # via hspec-pg-transact
         - port-utils
 
     "Jonathan Knowles <stackage@jonathanknowles.net> @jonathanknowles":