diff --git a/build-constraints.yaml b/build-constraints.yaml
index bc2aa4f6..70f3556f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1303,6 +1303,9 @@ packages:
         - engine-io-wai
         - rethinkdb
 
+    "Michael Walker <mike@barrucadu.co.uk> @barrucadu":
+        - both
+
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/537
         - zlib < 0.6