diff --git a/.cibw/install-mpi.sh b/.cibw/install-mpi.sh
index 066e738..695e070 100755
--- a/.cibw/install-mpi.sh
+++ b/.cibw/install-mpi.sh
@@ -56,6 +56,7 @@ micromamba create --yes --always-copy \
            --prefix "$envdir" \
            --relocate-prefix "$MPI_ROOT" \
            "$MPI_PACKAGE"="$MPI_VERSION"
+micromamba remove --yes --quiet --force --prefix "$envdir" attr
 micromamba list --prefix "$envdir"
 
 echo "Fix MPI compiler wrappers"