diff --git a/build-constraints.yaml b/build-constraints.yaml
index 65580249..f41a30ea 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8476,6 +8476,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7504
         - nothunks < 0.3
+
+        # https://github.com/commercialhaskell/stackage/issues/7506
+        - postgresql-libpq < 0.10.2
     # end of Stackage upper bounds
 # end of packages