diff --git a/build-constraints.yaml b/build-constraints.yaml
index a7d224ea..29335c3b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5388,7 +5388,7 @@ packages:
         - poll
         - portable-lines
         - posix-pty
-        - postgresql-libpq
+        - postgresql-libpq < 0.10.0.0 # https://github.com/commercialhaskell/stackage/issues/7073
         - postgresql-simple
         - postgresql-simple-url
         - pretty-hex