diff --git a/src/models/harms.rs b/src/models/harms.rs
index 63c782e..4c1f9b9 100644
--- a/src/models/harms.rs
+++ b/src/models/harms.rs
@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-// in diesel, we need serde_derive to realize the needed traits to de- or serialize
-use serde_derive::*;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::harms;
 
diff --git a/src/models/roles.rs b/src/models/roles.rs
index c83c09a..c0d9003 100644
--- a/src/models/roles.rs
+++ b/src/models/roles.rs
@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-use serde_derive::*;
-//use serde;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::roles;
 
diff --git a/src/models/user_roles.rs b/src/models/user_roles.rs
index aaa099e..eee2ffc 100644
--- a/src/models/user_roles.rs
+++ b/src/models/user_roles.rs
@@ -6,7 +6,7 @@
  */
 
 use crate::schema::user_roles;
-use serde_derive::*;
+use serde::Deserialize;
 
 /// Structure of a user role record
 #[derive(Debug, Queryable, PartialEq)]
diff --git a/src/models/users.rs b/src/models/users.rs
index 544c89b..5d0437f 100644
--- a/src/models/users.rs
+++ b/src/models/users.rs
@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-// in diesel, we need serde_derive to realize the needed traits to de- or serialize
-use serde_derive::*;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::users;