diff --git a/build-constraints.yaml b/build-constraints.yaml
index 25130e5b..0c3f1ac1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5398,6 +5398,9 @@ expected-test-failures:
     # https://github.com/commercialhaskell/stackage/issues/4707
     - blaze-colonnade
 
+    # https://github.com/commercialhaskell/stackage/issues/4721
+    - codec-beam
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run