diff --git a/build-constraints.yaml b/build-constraints.yaml
index 990d5fe4..1947186a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2486,6 +2486,8 @@ packages:
         - main-tester
         - skews
         - wss-client
+        - network-messagepack-rpc
+        - network-messagepack-rpc-websocket
 
     "Hans-Christian Esperer <hc@hcesperer.org> @hce":
         - avwx