diff --git a/build-constraints.yaml b/build-constraints.yaml
index 09bd9163..1aa1b14b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2955,6 +2955,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2393
         - HUnit < 1.6.0.0
 
+        # https://github.com/dylex/postgresql-typed/issues/4
+        - postgresql-typed < 0.5.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of