diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5ae07ae7..63335f98 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -135,6 +135,8 @@ packages:
 
     "Erik Schnetter <schnetter@gmail.com> @eschnett":
         - mpi-hs
+        - mpi-hs-binary
+        - mpi-hs-cereal
 
     "Yang Bo <pop.atry@gmail.com> @Atry":
         - control-dsl < 0 # via doctest-discover