diff --git a/src/entity/item/shield.rs b/src/entity/item/shield.rs
index 243da71..c170861 100644
--- a/src/entity/item/shield.rs
+++ b/src/entity/item/shield.rs
@@ -1,4 +1,5 @@
 use std::convert::{TryFrom, Into};
+use serde::{Serialize, Deserialize};
 
 #[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize, enum_utils::FromStr, derive_more::Display)]
 pub enum ShieldType {
diff --git a/src/entity/item/tool.rs b/src/entity/item/tool.rs
index 4bf3efc..4dc6857 100644
--- a/src/entity/item/tool.rs
+++ b/src/entity/item/tool.rs
@@ -1,4 +1,4 @@
-
+use serde::{Serialize, Deserialize};
 
 #[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize, enum_utils::FromStr, derive_more::Display)]
 pub enum ToolType {
diff --git a/src/entity/item/unit.rs b/src/entity/item/unit.rs
index e6ef8fe..8a55018 100644
--- a/src/entity/item/unit.rs
+++ b/src/entity/item/unit.rs
@@ -1,4 +1,5 @@
 use std::convert::{TryFrom, Into};
+use serde::{Serialize, Deserialize};
 
 
 #[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize, enum_utils::FromStr, derive_more::Display)]