diff --git a/build-constraints.yaml b/build-constraints.yaml
index c86b8997..851f906a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1984,6 +1984,9 @@ packages:
         # https://github.com/fpco/stackage/issues/1227
         - diagrams-svg < 1.4
 
+        # https://github.com/fpco/stackage/issues/1229
+        - network-transport-tcp < 0.5
+
 # end of packages