diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8cccf830..97da7df0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3119,7 +3119,7 @@ packages:
         - blas-hs
 
     "Eitan Chatav <eitan@gmail.com> @echatav":
-        - squeal-postgresql
+        - squeal-postgresql < 0 # https://github.com/morphismtech/squeal/issues/30
 
     "Sam Quinn <lazersmoke@gmail.com> @Lazersmoke":
         - ghost-buster