diff --git a/build-constraints.yaml b/build-constraints.yaml
index 01dfa81f..097260a7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1697,10 +1697,10 @@ packages:
         - tries < 0 # GHC 8.4 via bytestring-trie
         - unit-constraint
         - unfoldable-restricted
-        - urlpath < 0 # GHC 8.4 via monad-control-aligned
+        - urlpath # 0 # GHC 8.4 via monad-control-aligned
         - wai-transformers
         - websockets-rpc < 0 # GHC 8.4 via uuid
-        # - websockets-simple # needs monad-control-aligned and wai-transformers-0.1.0
+        - websockets-simple # needs monad-control-aligned and wai-transformers-0.1.0
         - webpage < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - ws