diff --git a/build-constraints.yaml b/build-constraints.yaml
index f608b837..ad96c3b0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4554,9 +4554,6 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/4504
         - th-abstraction < 0.3.0.0
 
-        # https://github.com/commercialhaskell/stackage/issues/4506
-        # port-utils < 0.2.1.0
-
         # https://github.com/commercialhaskell/stackage/issues/4511
         - wai-extra < 3.0.26
 
@@ -5031,6 +5028,7 @@ expected-test-failures:
     - punycode
     - unagi-chan
     - zeromq4-patterns
+    - port-utils
 
     # Requires running servers, accounts, or a specific environment.
     # These shouldn't be re-enabled unless we know a fix has been released.