diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5ae70b82..d1b79207 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5346,6 +5346,9 @@ expected-test-failures:
 
     # https://github.com/jgm/pandoc/issues/5582
     - pandoc
+
+    # Internal errors with move to the new curator tool?
+    - blaze-collonade # https://github.com/commercialhaskell/stackage/issues/4639
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run