diff --git a/Cargo.toml b/Cargo.toml
index df4fc6f31e80f79f0529f925e3d675fb0059902f..66db77692daeb7433c68eee71190704a61221d51 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,7 +44,7 @@ fuzzy-matcher = "0.3.7"
 #rust_libecpint = {path="../rust_libecpint"}
 # seems to pull in libssl and libcrypto which is rejected by manylinux
 reqwest = { version = "0.10", default-features = false, features = ["blocking", "json", "rustls-tls"] }
-mpi = {version = "0.8.0", features = ["user-operations", "derive"], optional = true}
+mpi = {version = "0.8", features = ["user-operations", "derive"], optional = true}
 # for cuda
 #cudarc = "0.10.0"
 rest_tensors = {path="../rest_tensors"}
diff --git a/src/scf_io/mod.rs b/src/scf_io/mod.rs
index 5b97d7f41ff5874572c94ebd44c3b25028646163..faeeeba761449f055d78f2e8c09199e4d4f7c30d 100644
--- a/src/scf_io/mod.rs
+++ b/src/scf_io/mod.rs
@@ -47,6 +47,9 @@ use self::util::norm;
 use smear::apply_smearing;
 use smear::annealed_sigma;
 
+#[allow(unused_imports)]
+use tensors::BasicMatUp;
+
 #[pyclass]
 #[derive(Clone)]
 pub struct SCF {