diff --git a/build-constraints.yaml b/build-constraints.yaml
index c08d4c82..d010b3c1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5239,6 +5239,8 @@ packages:
         - crypton-x509-store
         - crypton-x509-system
         - crypton-x509-validation
+        - ech-config
+        - hpke
         - http-semantics
         - http2
         - network-control