diff --git a/bauh/api/abstract/model.py b/bauh/api/abstract/model.py
index 06c352ff..8e63e257 100644
--- a/bauh/api/abstract/model.py
+++ b/bauh/api/abstract/model.py
@@ -263,7 +263,17 @@ class PackageUpdate:
         self.type = pkg_type
 
     def __str__(self):
-        return '{} (id={}, name={}, version={}, type={})'.format(self.__class__.__name__, self.id, self.name, self.version, self.type)
+        attrs = ', '.join(f'{p}={v}' for p, v in sorted(self.__dict__.items()))
+        return f'{self.__class__.__name__} ({attrs})'
+
+    def __eq__(self, other):
+        if isinstance(other, PackageUpdate):
+            return self.__dict__ == other.__dict__
+
+        return False
+
+    def __hash__(self):
+        return sum(hash(v) for v in self.__dict__.values())
 
 
 class PackageHistory:
diff --git a/tests/api/__init__.py b/tests/api/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/api/abstract/__init__.py b/tests/api/abstract/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/api/abstract/test_model.py b/tests/api/abstract/test_model.py
new file mode 100644
index 00000000..1c1ae843
--- /dev/null
+++ b/tests/api/abstract/test_model.py
@@ -0,0 +1,18 @@
+from unittest import TestCase
+
+from bauh.api.abstract.model import PackageUpdate
+
+
+class PackageUpdateTest(TestCase):
+
+    def test__hash__return_same_hash_for_equal_packages(self):
+        a = PackageUpdate(pkg_id='a', name='b', version='c', pkg_type='d')
+        b = PackageUpdate(pkg_id='a', name='b', version='c', pkg_type='d')
+        self.assertEqual(a, b)
+        self.assertEqual(hash(a), hash(b))
+
+    def test__hash__return_different_hash_for_not_equal_packages(self):
+        a = PackageUpdate(pkg_id='a', name='b', version='c', pkg_type='d')
+        b = PackageUpdate(pkg_id='a', name='b', version='c', pkg_type='e')
+        self.assertNotEqual(a, b)
+        self.assertNotEqual(hash(a), hash(b))