diff --git a/server/src/domain/sql_opaque_handler.rs b/server/src/domain/sql_opaque_handler.rs
index b2ded01..5a5667b 100644
--- a/server/src/domain/sql_opaque_handler.rs
+++ b/server/src/domain/sql_opaque_handler.rs
@@ -8,7 +8,7 @@ use super::{
 };
 use async_trait::async_trait;
 use lldap_auth::opaque;
-use sea_orm::{ActiveModelTrait, ActiveValue, EntityTrait, FromQueryResult, QuerySelect};
+use sea_orm::{ActiveModelTrait, ActiveValue, EntityTrait, QuerySelect};
 use secstr::SecUtf8;
 use tracing::{debug, instrument};
 
@@ -50,18 +50,14 @@ impl SqlBackendHandler {
 
     #[instrument(skip_all, level = "debug", err)]
     async fn get_password_file_for_user(&self, user_id: UserId) -> Result<Option<Vec<u8>>> {
-        #[derive(FromQueryResult)]
-        struct OnlyPasswordHash {
-            password_hash: Option<Vec<u8>>,
-        }
         // Fetch the previously registered password file from the DB.
         Ok(model::User::find_by_id(user_id)
             .select_only()
             .column(UserColumn::PasswordHash)
-            .into_model::<OnlyPasswordHash>()
+            .into_tuple::<(Option<Vec<u8>>,)>()
             .one(&self.sql_pool)
             .await?
-            .and_then(|u| u.password_hash))
+            .and_then(|u| u.0))
     }
 }
 
diff --git a/server/src/infra/sql_backend_handler.rs b/server/src/infra/sql_backend_handler.rs
index 16e3f1a..54ca857 100644
--- a/server/src/infra/sql_backend_handler.rs
+++ b/server/src/infra/sql_backend_handler.rs
@@ -8,8 +8,7 @@ use crate::domain::{
 use async_trait::async_trait;
 use sea_orm::{
     sea_query::{Cond, Expr},
-    ActiveModelTrait, ColumnTrait, EntityTrait, FromQueryResult, IntoActiveModel, QueryFilter,
-    QuerySelect,
+    ActiveModelTrait, ColumnTrait, EntityTrait, IntoActiveModel, QueryFilter, QuerySelect,
 };
 use std::collections::HashSet;
 use tracing::{debug, instrument};
@@ -24,11 +23,6 @@ fn gen_random_string(len: usize) -> String {
         .collect()
 }
 
-#[derive(FromQueryResult)]
-struct OnlyJwtHash {
-    jwt_hash: i64,
-}
-
 #[async_trait]
 impl TcpBackendHandler for SqlBackendHandler {
     #[instrument(skip_all, level = "debug")]
@@ -37,11 +31,11 @@ impl TcpBackendHandler for SqlBackendHandler {
             .select_only()
             .column(JwtStorageColumn::JwtHash)
             .filter(JwtStorageColumn::Blacklisted.eq(true))
-            .into_model::<OnlyJwtHash>()
+            .into_tuple::<(i64,)>()
             .all(&self.sql_pool)
             .await?
             .into_iter()
-            .map(|m| m.jwt_hash as u64)
+            .map(|m| m.0 as u64)
             .collect::<HashSet<u64>>())
     }
 
@@ -91,11 +85,11 @@ impl TcpBackendHandler for SqlBackendHandler {
                     .add(JwtStorageColumn::UserId.eq(user))
                     .add(JwtStorageColumn::Blacklisted.eq(false)),
             )
-            .into_model::<OnlyJwtHash>()
+            .into_tuple::<(i64,)>()
             .all(&self.sql_pool)
             .await?
             .into_iter()
-            .map(|t| t.jwt_hash as u64)
+            .map(|t| t.0 as u64)
             .collect::<HashSet<u64>>();
         model::JwtStorage::update_many()
             .col_expr(JwtStorageColumn::Blacklisted, Expr::value(true))