diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1d4679d7..b9689289 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1039,6 +1039,9 @@ packages:
         - bifunctors < 5
         - profunctors < 5
 
+        # https://github.com/fpco/stackage/issues/591
+        - th-orphans < 0.12
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: