diff --git a/build-constraints.yaml b/build-constraints.yaml
index d585e9f4..f3eb2b83 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1645,10 +1645,14 @@ packages:
         - ghc-typelits-natnormalise
 
     "Athan Clark <athan.clark@gmail.com> @athanclark":
+        - aeson-attoparsec
         - alternative-vector
+        - almost-fix
+        - attoparsec-base64
         - attoparsec-path
         - attoparsec-ip
         - attoparsec-uri
+        - chan
         - commutative
         - composition-extra
         - every
@@ -1667,6 +1671,7 @@ packages:
         - quickcheck-combinators
         - rose-trees
         - sets
+        - since
         - timemap
         - tmapchan
         - tmapmvar
@@ -1676,7 +1681,9 @@ packages:
         - urlpath
         - wai-transformers
         - websockets-rpc
+        # - websockets-simple # needs monad-control-aligned and wai-transformers-0.1.0
         - webpage
+        - ws
 
     "Fumiaki Kinoshita <fumiexcel@gmail.com> @fumieval":
         - boundingboxes