diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2fa58a4d..2f178704 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -164,9 +164,9 @@ packages:
         - PyF
 
     "Erik Schnetter <schnetter@gmail.com> @eschnett":
-        - mpi-hs < 0 # https://github.com/commercialhaskell/stackage/issues/5444
-        - mpi-hs-binary < 0 # via mpi-hs
-        - mpi-hs-cereal < 0 # via mpi-hs
+        - mpi-hs
+        - mpi-hs-binary
+        - mpi-hs-cereal
 
     "Yang Bo <pop.atry@gmail.com> @Atry":
         - control-dsl < 0 # via doctest-discover