diff --git a/spacy/cfile.pyx b/spacy/cfile.pyx
index ceebe2e59..d5d4bf353 100644
--- a/spacy/cfile.pyx
+++ b/spacy/cfile.pyx
@@ -1,4 +1,4 @@
-from libc.stdio cimport fopen, fclose, fread, fwrite, FILE
+from libc.stdio cimport fopen, fclose, fread, fwrite
 from libc.string cimport memcpy
 
 
diff --git a/spacy/gold.pyx b/spacy/gold.pyx
index 358412fab..471018109 100644
--- a/spacy/gold.pyx
+++ b/spacy/gold.pyx
@@ -1,16 +1,12 @@
 # cython: profile=True
 from __future__ import unicode_literals, print_function
 
-import numpy
 import io
 import json
-import random
 import re
 import os
 from os import path
 
-from libc.string cimport memset
-
 import ujson as json
 
 from .syntax import nonproj
diff --git a/spacy/language.py b/spacy/language.py
index 573bb5a86..4542eae3b 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -1,6 +1,5 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
-from warnings import warn
 import pathlib
 from contextlib import contextmanager
 import shutil
@@ -33,7 +32,6 @@ from .attrs import TAG, DEP, ENT_IOB, ENT_TYPE, HEAD, PROB, LANG, IS_STOP
 from .syntax.parser import get_templates
 from .syntax.nonproj import PseudoProjectivity
 from .pipeline import DependencyParser, EntityRecognizer
-from .pipeline import BeamDependencyParser, BeamEntityRecognizer
 from .syntax.arc_eager import ArcEager
 from .syntax.ner import BiluoPushDown
 
diff --git a/spacy/matcher.pyx b/spacy/matcher.pyx
index 5c52ae9d0..1883ae89a 100644
--- a/spacy/matcher.pyx
+++ b/spacy/matcher.pyx
@@ -2,13 +2,10 @@
 # cython: infer_types=True
 from __future__ import unicode_literals
 
-from os import path
-
 from .typedefs cimport attr_t
 from .typedefs cimport hash_t
 from .attrs cimport attr_id_t
-from .structs cimport TokenC, LexemeC
-from .lexeme cimport Lexeme
+from .structs cimport TokenC
 
 from cymem.cymem cimport Pool
 from preshed.maps cimport PreshMap
@@ -17,7 +14,7 @@ from libcpp.pair cimport pair
 from murmurhash.mrmr cimport hash64
 from libc.stdint cimport int32_t
 
-from .attrs cimport ID, LENGTH, ENT_TYPE, ORTH, NORM, LEMMA, LOWER, SHAPE
+from .attrs cimport ID, ENT_TYPE
 from . import attrs
 from .tokens.doc cimport get_token_attr
 from .tokens.doc cimport Doc
diff --git a/spacy/morphology.pyx b/spacy/morphology.pyx
index 26405e988..e98ef1e92 100644
--- a/spacy/morphology.pyx
+++ b/spacy/morphology.pyx
@@ -1,12 +1,8 @@
 # cython: infer_types
 from __future__ import unicode_literals
 
-from os import path
-
 from libc.string cimport memset
 
-from .lemmatizer import Lemmatizer
-
 try:
     import ujson as json
 except ImportError:
diff --git a/spacy/pipeline.pyx b/spacy/pipeline.pyx
index 59e1994a9..b2d622329 100644
--- a/spacy/pipeline.pyx
+++ b/spacy/pipeline.pyx
@@ -2,7 +2,6 @@ from .syntax.parser cimport Parser
 from .syntax.beam_parser cimport BeamParser
 from .syntax.ner cimport BiluoPushDown
 from .syntax.arc_eager cimport ArcEager
-from .vocab cimport Vocab
 from .tagger import Tagger
 
 # TODO: The disorganization here is pretty embarrassing. At least it's only
diff --git a/spacy/tagger.pyx b/spacy/tagger.pyx
index 1f6b587c5..4a2ef082a 100644
--- a/spacy/tagger.pyx
+++ b/spacy/tagger.pyx
@@ -1,20 +1,16 @@
 import json
 import pathlib
 from collections import defaultdict
-from libc.string cimport memset
 
 from cymem.cymem cimport Pool
-from thinc.typedefs cimport atom_t, weight_t
+from thinc.typedefs cimport atom_t
 from thinc.extra.eg cimport Example
 from thinc.structs cimport ExampleC
 from thinc.linear.avgtron cimport AveragedPerceptron
 from thinc.linalg cimport VecVec
 
-from .typedefs cimport attr_t
 from .tokens.doc cimport Doc
 from .attrs cimport TAG
-from .parts_of_speech cimport NO_TAG, ADJ, ADV, ADP, CCONJ, DET, NOUN, NUM, PRON
-from .parts_of_speech cimport VERB, X, PUNCT, EOL, SPACE
 from .gold cimport GoldParse
 
 from .attrs cimport *
diff --git a/spacy/tokenizer.pyx b/spacy/tokenizer.pyx
index 5a4eb844a..42f090cde 100644
--- a/spacy/tokenizer.pyx
+++ b/spacy/tokenizer.pyx
@@ -1,13 +1,10 @@
 # cython: embedsignature=True
 from __future__ import unicode_literals
 
-import re
 import pathlib
 
 from cython.operator cimport dereference as deref
 from cython.operator cimport preincrement as preinc
-from cpython cimport Py_UNICODE_ISSPACE
-
 
 try:
     import ujson as json
diff --git a/spacy/util.py b/spacy/util.py
index 49c51b436..b255b92db 100644
--- a/spacy/util.py
+++ b/spacy/util.py
@@ -8,11 +8,8 @@ import os.path
 import pathlib
 import sys
 
-import six
 import textwrap
 
-from .attrs import TAG, HEAD, DEP, ENT_IOB, ENT_TYPE
-
 try:
     basestring
 except NameError: