diff --git a/pydantic/main.py b/pydantic/main.py
index 7e13e173357..1e87497d50e 100644
--- a/pydantic/main.py
+++ b/pydantic/main.py
@@ -313,7 +313,7 @@ def __new__(mcs, name, bases, namespace, **kwargs):  # noqa C901
             '__schema_cache__': {},
             '__json_encoder__': staticmethod(json_encoder),
             '__custom_root_type__': _custom_root_type,
-            '__hash__': (lambda self: hash(self.__dict__.values())) if not config.allow_mutation else None,
+            '__hash__': (lambda self: hash(tuple(self.__dict__.values()))) if not config.allow_mutation else None,
             **{n: v for n, v in namespace.items() if n not in fields},
         }
 
diff --git a/tests/test_main.py b/tests/test_main.py
index 9253bbede55..35421a2f254 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -386,7 +386,7 @@ class Config:
     assert '"TestModel" object has no field "b"' in exc_info.value.args[0]
 
 
-def test_immutable_are_hashable():
+def test_immutable_with_hashable_fields_are_hashable():
     class TestModel(BaseModel):
         a: int = 10
 
@@ -398,6 +398,20 @@ class Config:
     assert isinstance(hash(m), int)
 
 
+def test_immutable_with_unhashable_fields_are_not_hashable():
+    class TestModel(BaseModel):
+        a: int = 10
+        y: List[int] = [1, 2, 3]
+
+        class Config:
+            allow_mutation = False
+
+    m = TestModel()
+    with pytest.raises(TypeError) as exc_info:
+        hash(m)
+    assert "unhashable type: 'list'" in exc_info.value.args[0]
+
+
 def test_const_validates():
     class Model(BaseModel):
         a: int = Field(3, const=True)