diff --git a/spacy/tests/conftest.py b/spacy/tests/conftest.py
index c5ea99007..f6d6728a4 100644
--- a/spacy/tests/conftest.py
+++ b/spacy/tests/conftest.py
@@ -13,7 +13,7 @@ from ..hu import Hungarian
 from ..tokens import Doc
 from ..attrs import ORTH, TAG, HEAD, DEP
 
-from StringIO import StringIO
+from io import StringIO
 import pytest