diff --git a/fil_actors_shared/src/v10/util/mapmap.rs b/fil_actors_shared/src/v10/util/mapmap.rs
index 7c574caf..6789975d 100644
--- a/fil_actors_shared/src/v10/util/mapmap.rs
+++ b/fil_actors_shared/src/v10/util/mapmap.rs
@@ -5,11 +5,11 @@ use crate::v10::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v11/util/mapmap.rs b/fil_actors_shared/src/v11/util/mapmap.rs
index ec581920..2058362c 100644
--- a/fil_actors_shared/src/v11/util/mapmap.rs
+++ b/fil_actors_shared/src/v11/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v11::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v12/util/mapmap.rs b/fil_actors_shared/src/v12/util/mapmap.rs
index 110980ae..7b752c0f 100644
--- a/fil_actors_shared/src/v12/util/mapmap.rs
+++ b/fil_actors_shared/src/v12/util/mapmap.rs
@@ -5,11 +5,11 @@ use crate::v12::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v13/util/mapmap.rs b/fil_actors_shared/src/v13/util/mapmap.rs
index 9835b6eb..4af5c374 100644
--- a/fil_actors_shared/src/v13/util/mapmap.rs
+++ b/fil_actors_shared/src/v13/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v13::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v14/util/mapmap.rs b/fil_actors_shared/src/v14/util/mapmap.rs
index 0986085c..95eaa2ed 100644
--- a/fil_actors_shared/src/v14/util/mapmap.rs
+++ b/fil_actors_shared/src/v14/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v14::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v15/util/mapmap.rs b/fil_actors_shared/src/v15/util/mapmap.rs
index 32b4bcf4..3011993e 100644
--- a/fil_actors_shared/src/v15/util/mapmap.rs
+++ b/fil_actors_shared/src/v15/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v15::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v16/util/mapmap.rs b/fil_actors_shared/src/v16/util/mapmap.rs
index d9ecf150..19beeb1f 100644
--- a/fil_actors_shared/src/v16/util/mapmap.rs
+++ b/fil_actors_shared/src/v16/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v16::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v17/util/mapmap.rs b/fil_actors_shared/src/v17/util/mapmap.rs
index 4c973d93..79359e1c 100644
--- a/fil_actors_shared/src/v17/util/mapmap.rs
+++ b/fil_actors_shared/src/v17/util/mapmap.rs
@@ -2,11 +2,11 @@ use crate::v17::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key
diff --git a/fil_actors_shared/src/v9/util/mapmap.rs b/fil_actors_shared/src/v9/util/mapmap.rs
index 9349a646..a763d8b8 100644
--- a/fil_actors_shared/src/v9/util/mapmap.rs
+++ b/fil_actors_shared/src/v9/util/mapmap.rs
@@ -5,11 +5,11 @@ use crate::v9::{Keyer, Map, make_empty_map, make_map_with_root_and_bitwidth};
 use cid::Cid;
 use fvm_ipld_blockstore::Blockstore;
 use fvm_ipld_hamt::{BytesKey, Error};
-use serde::__private::PhantomData;
 use serde::Serialize;
 use serde::de::DeserializeOwned;
 use std::collections::BTreeMap;
 use std::collections::btree_map::Entry::{Occupied, Vacant};
+use std::marker::PhantomData;
 
 // MapMap stores multiple values per key in a Hamt of Hamts
 // Every element stored has a primary and secondary key