diff --git a/.sqlx/query-160ba7ba8bd514083af2a982dca1a0f1bc85e5b73d81a12b67d6c2b0d90e5740.json b/.sqlx/query-160ba7ba8bd514083af2a982dca1a0f1bc85e5b73d81a12b67d6c2b0d90e5740.json
new file mode 100644
index 0000000..ebf59e0
--- /dev/null
+++ b/.sqlx/query-160ba7ba8bd514083af2a982dca1a0f1bc85e5b73d81a12b67d6c2b0d90e5740.json
@@ -0,0 +1,85 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                ARRAY_AGG(ROW(\n                    languages.id,\n                    languages.label,\n                    languages.code\n                )::user_language_type),\n                ARRAY[]::user_language_type[]\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        WHERE user_settings.id = $1\n        GROUP BY user_settings.id\n        ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "id",
+        "type_info": "Int4"
+      },
+      {
+        "ordinal": 1,
+        "name": "user_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 2,
+        "name": "last_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 3,
+        "name": "first_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 4,
+        "name": "username",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 5,
+        "name": "source",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 6,
+        "name": "allowed_langs!: Vec<UserLanguage>",
+        "type_info": {
+          "Custom": {
+            "name": "user_language_type[]",
+            "kind": {
+              "Array": {
+                "Custom": {
+                  "name": "user_language_type",
+                  "kind": {
+                    "Composite": [
+                      [
+                        "id",
+                        "Int4"
+                      ],
+                      [
+                        "label",
+                        "Varchar"
+                      ],
+                      [
+                        "code",
+                        "Varchar"
+                      ]
+                    ]
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Int4"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      null
+    ]
+  },
+  "hash": "160ba7ba8bd514083af2a982dca1a0f1bc85e5b73d81a12b67d6c2b0d90e5740"
+}
diff --git a/.sqlx/query-30aefca980d6708fa760e7cb4196224c1c597c70e57ec71e6deb4556385d355d.json b/.sqlx/query-30aefca980d6708fa760e7cb4196224c1c597c70e57ec71e6deb4556385d355d.json
new file mode 100644
index 0000000..299faba
--- /dev/null
+++ b/.sqlx/query-30aefca980d6708fa760e7cb4196224c1c597c70e57ec71e6deb4556385d355d.json
@@ -0,0 +1,86 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                ARRAY_AGG(ROW(\n                    languages.id,\n                    languages.label,\n                    languages.code\n                )::user_language_type),\n                ARRAY[]::user_language_type[]\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        GROUP BY user_settings.id\n        ORDER BY user_settings.id ASC\n        OFFSET $1\n        LIMIT $2\n        ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "id",
+        "type_info": "Int4"
+      },
+      {
+        "ordinal": 1,
+        "name": "user_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 2,
+        "name": "last_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 3,
+        "name": "first_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 4,
+        "name": "username",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 5,
+        "name": "source",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 6,
+        "name": "allowed_langs!: Vec<UserLanguage>",
+        "type_info": {
+          "Custom": {
+            "name": "user_language_type[]",
+            "kind": {
+              "Array": {
+                "Custom": {
+                  "name": "user_language_type",
+                  "kind": {
+                    "Composite": [
+                      [
+                        "id",
+                        "Int4"
+                      ],
+                      [
+                        "label",
+                        "Varchar"
+                      ],
+                      [
+                        "code",
+                        "Varchar"
+                      ]
+                    ]
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Int8",
+        "Int8"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      null
+    ]
+  },
+  "hash": "30aefca980d6708fa760e7cb4196224c1c597c70e57ec71e6deb4556385d355d"
+}
diff --git a/.sqlx/query-60a9a7320f1dc54783c6c02f0d56636865da20efa773cb3d9f2b78fb38416800.json b/.sqlx/query-60a9a7320f1dc54783c6c02f0d56636865da20efa773cb3d9f2b78fb38416800.json
deleted file mode 100644
index 5a9d3e0..0000000
--- a/.sqlx/query-60a9a7320f1dc54783c6c02f0d56636865da20efa773cb3d9f2b78fb38416800.json
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                JSON_AGG(JSON_BUILD_OBJECT(\n                    'id', languages.id,\n                    'label', languages.label,\n                    'code', languages.code\n                )),\n                '[]'::JSON\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        GROUP BY user_settings.id\n        ORDER BY user_settings.id ASC\n        OFFSET $1\n        LIMIT $2\n        ",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "id",
-        "type_info": "Int4"
-      },
-      {
-        "ordinal": 1,
-        "name": "user_id",
-        "type_info": "Int8"
-      },
-      {
-        "ordinal": 2,
-        "name": "last_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 3,
-        "name": "first_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 4,
-        "name": "username",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 5,
-        "name": "source",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 6,
-        "name": "allowed_langs!: Vec<UserLanguage>",
-        "type_info": "Json"
-      }
-    ],
-    "parameters": {
-      "Left": [
-        "Int8",
-        "Int8"
-      ]
-    },
-    "nullable": [
-      false,
-      false,
-      false,
-      false,
-      false,
-      false,
-      null
-    ]
-  },
-  "hash": "60a9a7320f1dc54783c6c02f0d56636865da20efa773cb3d9f2b78fb38416800"
-}
diff --git a/.sqlx/query-cc20029c1ac8cde73bd2a08d2a17740a08c54cf2af13fea288593a94343a71fe.json b/.sqlx/query-cc20029c1ac8cde73bd2a08d2a17740a08c54cf2af13fea288593a94343a71fe.json
new file mode 100644
index 0000000..b97584b
--- /dev/null
+++ b/.sqlx/query-cc20029c1ac8cde73bd2a08d2a17740a08c54cf2af13fea288593a94343a71fe.json
@@ -0,0 +1,85 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                ARRAY_AGG(ROW(\n                    languages.id,\n                    languages.label,\n                    languages.code\n                )::user_language_type),\n                ARRAY[]::user_language_type[]\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        WHERE user_settings.user_id = $1\n        GROUP BY user_settings.id\n        ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "id",
+        "type_info": "Int4"
+      },
+      {
+        "ordinal": 1,
+        "name": "user_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 2,
+        "name": "last_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 3,
+        "name": "first_name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 4,
+        "name": "username",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 5,
+        "name": "source",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 6,
+        "name": "allowed_langs!: Vec<UserLanguage>",
+        "type_info": {
+          "Custom": {
+            "name": "user_language_type[]",
+            "kind": {
+              "Array": {
+                "Custom": {
+                  "name": "user_language_type",
+                  "kind": {
+                    "Composite": [
+                      [
+                        "id",
+                        "Int4"
+                      ],
+                      [
+                        "label",
+                        "Varchar"
+                      ],
+                      [
+                        "code",
+                        "Varchar"
+                      ]
+                    ]
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Int8"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false,
+      false,
+      false,
+      null
+    ]
+  },
+  "hash": "cc20029c1ac8cde73bd2a08d2a17740a08c54cf2af13fea288593a94343a71fe"
+}
diff --git a/.sqlx/query-d798dbf83070efc88e92b05c2e879d2bc1327b1eadc6576063129e9b35340743.json b/.sqlx/query-d798dbf83070efc88e92b05c2e879d2bc1327b1eadc6576063129e9b35340743.json
deleted file mode 100644
index fc01be6..0000000
--- a/.sqlx/query-d798dbf83070efc88e92b05c2e879d2bc1327b1eadc6576063129e9b35340743.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                JSON_AGG(JSON_BUILD_OBJECT(\n                    'id', languages.id,\n                    'label', languages.label,\n                    'code', languages.code\n                )),\n                '[]'::JSON\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        WHERE user_settings.id = $1\n        GROUP BY user_settings.id\n        ",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "id",
-        "type_info": "Int4"
-      },
-      {
-        "ordinal": 1,
-        "name": "user_id",
-        "type_info": "Int8"
-      },
-      {
-        "ordinal": 2,
-        "name": "last_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 3,
-        "name": "first_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 4,
-        "name": "username",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 5,
-        "name": "source",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 6,
-        "name": "allowed_langs!: Vec<UserLanguage>",
-        "type_info": "Json"
-      }
-    ],
-    "parameters": {
-      "Left": [
-        "Int4"
-      ]
-    },
-    "nullable": [
-      false,
-      false,
-      false,
-      false,
-      false,
-      false,
-      null
-    ]
-  },
-  "hash": "d798dbf83070efc88e92b05c2e879d2bc1327b1eadc6576063129e9b35340743"
-}
diff --git a/.sqlx/query-e8525be82859dfef8591206896d88e268c502709b8f6f1a558ff9834d11e951b.json b/.sqlx/query-e8525be82859dfef8591206896d88e268c502709b8f6f1a558ff9834d11e951b.json
deleted file mode 100644
index 18b8b1f..0000000
--- a/.sqlx/query-e8525be82859dfef8591206896d88e268c502709b8f6f1a558ff9834d11e951b.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "db_name": "PostgreSQL",
-  "query": "\n        SELECT\n            user_settings.id,\n            user_settings.user_id,\n            user_settings.last_name,\n            user_settings.first_name,\n            user_settings.username,\n            user_settings.source,\n            COALESCE(\n                JSON_AGG(JSON_BUILD_OBJECT(\n                    'id', languages.id,\n                    'label', languages.label,\n                    'code', languages.code\n                )),\n                '[]'::JSON\n            ) AS \"allowed_langs!: Vec<UserLanguage>\"\n        FROM user_settings\n        LEFT JOIN users_languages ON user_settings.id = users_languages.user\n        LEFT JOIN languages ON users_languages.language = languages.id\n        WHERE user_settings.user_id = $1\n        GROUP BY user_settings.id\n        ",
-  "describe": {
-    "columns": [
-      {
-        "ordinal": 0,
-        "name": "id",
-        "type_info": "Int4"
-      },
-      {
-        "ordinal": 1,
-        "name": "user_id",
-        "type_info": "Int8"
-      },
-      {
-        "ordinal": 2,
-        "name": "last_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 3,
-        "name": "first_name",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 4,
-        "name": "username",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 5,
-        "name": "source",
-        "type_info": "Varchar"
-      },
-      {
-        "ordinal": 6,
-        "name": "allowed_langs!: Vec<UserLanguage>",
-        "type_info": "Json"
-      }
-    ],
-    "parameters": {
-      "Left": [
-        "Int8"
-      ]
-    },
-    "nullable": [
-      false,
-      false,
-      false,
-      false,
-      false,
-      false,
-      null
-    ]
-  },
-  "hash": "e8525be82859dfef8591206896d88e268c502709b8f6f1a558ff9834d11e951b"
-}
diff --git a/src/views/users/mod.rs b/src/views/users/mod.rs
index 0ae9d92..b29816d 100644
--- a/src/views/users/mod.rs
+++ b/src/views/users/mod.rs
@@ -39,12 +39,12 @@ async fn get_users(pagination: Query<Pagination>, db: Database) -> impl IntoResp
             user_settings.username,
             user_settings.source,
             COALESCE(
-                JSON_AGG(JSON_BUILD_OBJECT(
-                    'id', languages.id,
-                    'label', languages.label,
-                    'code', languages.code
-                )),
-                '[]'::JSON
+                ARRAY_AGG(ROW(
+                    languages.id,
+                    languages.label,
+                    languages.code
+                )::user_language_type),
+                ARRAY[]::user_language_type[]
             ) AS "allowed_langs!: Vec<UserLanguage>"
         FROM user_settings
         LEFT JOIN users_languages ON user_settings.id = users_languages.user
@@ -76,12 +76,12 @@ async fn get_user(Path(user_id): Path<i64>, db: Database) -> impl IntoResponse {
             user_settings.username,
             user_settings.source,
             COALESCE(
-                JSON_AGG(JSON_BUILD_OBJECT(
-                    'id', languages.id,
-                    'label', languages.label,
-                    'code', languages.code
-                )),
-                '[]'::JSON
+                ARRAY_AGG(ROW(
+                    languages.id,
+                    languages.label,
+                    languages.code
+                )::user_language_type),
+                ARRAY[]::user_language_type[]
             ) AS "allowed_langs!: Vec<UserLanguage>"
         FROM user_settings
         LEFT JOIN users_languages ON user_settings.id = users_languages.user
@@ -138,12 +138,12 @@ async fn create_or_update_user(
             user_settings.username,
             user_settings.source,
             COALESCE(
-                JSON_AGG(JSON_BUILD_OBJECT(
-                    'id', languages.id,
-                    'label', languages.label,
-                    'code', languages.code
-                )),
-                '[]'::JSON
+                ARRAY_AGG(ROW(
+                    languages.id,
+                    languages.label,
+                    languages.code
+                )::user_language_type),
+                ARRAY[]::user_language_type[]
             ) AS "allowed_langs!: Vec<UserLanguage>"
         FROM user_settings
         LEFT JOIN users_languages ON user_settings.id = users_languages.user
diff --git a/src/views/users/serializers.rs b/src/views/users/serializers.rs
index 97dd719..beb81fd 100644
--- a/src/views/users/serializers.rs
+++ b/src/views/users/serializers.rs
@@ -1,6 +1,7 @@
 use serde::{Deserialize, Serialize};
 
 #[derive(sqlx::FromRow, sqlx::Type, Serialize)]
+#[sqlx(type_name = "user_language_type")]
 pub struct UserLanguage {
     pub id: i32,
     pub label: String,