diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1a887819..d0cf3d9e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1597,7 +1597,7 @@ packages:
         - neat-interpolation
         - optima
         - partial-handler
-        - postgresql-binary
+        - postgresql-binary < 0.12.4.2 # https://github.com/commercialhaskell/stackage/issues/6217
         - postgresql-syntax
         - primitive-extras
         - ptr-poker