diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9426ea61..56fef56d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4922,6 +4922,9 @@ packages:
       - dhall-bash < 1.0.32
       - dhall-nix < 1.1.16
 
+      # https://github.com/commercialhaskell/stackage/issues/5581
+      - unordered-containers < 0.2.12.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of