diff --git a/spacy/syntax/parser.pyx b/spacy/syntax/parser.pyx
index 40f010f4a..c62ba6c6f 100644
--- a/spacy/syntax/parser.pyx
+++ b/spacy/syntax/parser.pyx
@@ -4,6 +4,7 @@ MALT-style dependency parser
 """
 from __future__ import unicode_literals
 cimport cython
+cimport cython.parallel
 
 from cpython.ref cimport PyObject, Py_INCREF, Py_XDECREF
 from cpython.exc cimport PyErr_CheckSignals