diff --git a/backend/repository/tribe_sqlite_repository.py b/backend/repository/tribe_sqlite_repository.py
index c43de87..fd26984 100644
--- a/backend/repository/tribe_sqlite_repository.py
+++ b/backend/repository/tribe_sqlite_repository.py
@@ -7,8 +7,7 @@ class TribeSQLiteRepository(AbstractRepository):
         self.conn = conn
 
     def add(self, tribe: Tribe) -> None:
-        cursor = self.conn.cursor()
-        cursor.execute(
+        self.conn.execute(
             """
         INSERT INTO tribes(name, level) VALUES (?, ?)
         """,
@@ -19,7 +18,16 @@ class TribeSQLiteRepository(AbstractRepository):
         )
 
     def update(self, name: str, tribe: Tribe) -> None:
-        pass
+        self.conn.execute(
+            """
+            UPDATE tribes SET name=:newname, level=:newlevel WHERE name=:name
+            """,
+            {
+                "newname": tribe.name,
+                "newlevel": tribe.level,
+                "name": name,
+            },
+        )
 
     def get(self, name: str) -> Tribe:
         cursor = self.conn.cursor()
@@ -48,4 +56,11 @@ class TribeSQLiteRepository(AbstractRepository):
         return [Tribe(*r) for r in rows]
 
     def delete(self, tribe: Tribe) -> None:
-        pass
+        self.conn.execute(
+            """
+            DELETE FROM tribes WHERE name=:name
+            """,
+            {
+                "name": tribe.name,
+            },
+        )
diff --git a/tests/integration/test_repository_sqlite.py b/tests/integration/test_repository_sqlite.py
index 9fec9a0..4455ec2 100644
--- a/tests/integration/test_repository_sqlite.py
+++ b/tests/integration/test_repository_sqlite.py
@@ -86,3 +86,34 @@ def test_add_tribe_fail_exists(sqlite_conn):
     tribe = Tribe(*tribe_infos)
     with pytest.raises(sqlite3.IntegrityError):
         tribe_repo.add(tribe)
+
+
+def test_update_tribe(sqlite_conn):
+    create_db(sqlite_conn)
+    prebuild_tribes = populate_tribe(sqlite_conn)
+
+    tribe_repo = TribeSQLiteRepository(sqlite_conn)
+    tribe_repo.update("Tribe1", Tribe("Tribe0", "Term"))
+    sqlite_conn.commit()
+
+    expected = [
+        Tribe("Tribe0", "Term"),
+        Tribe("Tribe2", "2nd"),
+        Tribe("Tribe3", "1ST"),
+    ]
+    assert tribe_repo.list() == expected
+
+
+def test_delete_tribe(sqlite_conn):
+    create_db(sqlite_conn)
+    prebuild_tribes = populate_tribe(sqlite_conn)
+
+    tribe_repo = TribeSQLiteRepository(sqlite_conn)
+    tribe_repo.delete(prebuild_tribes[0])
+    sqlite_conn.commit()
+
+    expected = [
+        Tribe("Tribe2", "2nd"),
+        Tribe("Tribe3", "1ST"),
+    ]
+    assert tribe_repo.list() == expected