diff --git a/spacy/tests/serialize/test_packer.py b/spacy/tests/serialize/test_packer.py
index 6ec583d08..1e79c8247 100644
--- a/spacy/tests/serialize/test_packer.py
+++ b/spacy/tests/serialize/test_packer.py
@@ -64,6 +64,7 @@ def test_packer_unannotated(tokenizer):
     assert result.string == 'the dog jumped'
 
 
+@pytest.mark.models
 def test_packer_annotated(tokenizer):
     vocab = tokenizer.vocab
     nn = vocab.strings['NN']