diff --git a/build-constraints.yaml b/build-constraints.yaml
index c99fe905..46da212d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2277,6 +2277,9 @@ packages:
         - gtk3 < 0.14.4
         - pango < 0.13.3.0
 
+        # https://github.com/fpco/stackage/issues/1546
+        - unix-compat < 0.4.2.0
+
 # end of packages