diff --git a/build-constraints.yaml b/build-constraints.yaml
index 63b8ad4b..6f43a7c0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3703,6 +3703,7 @@ expected-test-failures:
     - snap-core # https://github.com/snapframework/snap-core/issues/26
     - stm-delay # https://github.com/joeyadams/haskell-stm-delay/issues/5
     - pg-transact # https://github.com/jfischoff/pg-transact/issues/2
+    - tmp-postgres # https://github.com/jfischoff/tmp-postgres/issues/1
 
 # end of expected-test-failures