diff --git a/DjangoBlog/whoosh_cn_backend.py b/DjangoBlog/whoosh_cn_backend.py
index d8b43cc..5b29a9a 100644
--- a/DjangoBlog/whoosh_cn_backend.py
+++ b/DjangoBlog/whoosh_cn_backend.py
@@ -11,7 +11,7 @@ import warnings
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
-from django.utils import six
+import six
 from django.utils.datetime_safe import datetime
 from django.utils.encoding import force_text
 
@@ -912,7 +912,6 @@ class WhooshSearchQuery(BaseSearchQuery):
 
         return u"%s%s" % (index_fieldname, query_frag)
 
-
         # if not filter_type in ('in', 'range'):
         #     # 'in' is a bit of a special case, as we don't want to
         #     # convert a valid list/tuple to string. Defer handling it
diff --git a/requirements.txt b/requirements.txt
index 56fc89a..5f6b623 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,58 +1,59 @@
 appdirs==1.4.3
-asn1crypto==1.2.0
-astroid==2.3.2
-attrs==19.1.0
-bottle==0.12.17
-certifi==2019.9.11
-cffi==1.13.1
+asgiref==3.2.3
+asn1crypto==1.3.0
+astroid==2.3.3
+attrs==19.3.0
+bottle==0.12.18
+certifi==2019.11.28
+cffi==1.14.0
 chardet==3.0.4
-coverage==4.5.4
+coverage==5.0.3
 cryptography==2.8
-Django==2.2.8
+Django==3.0.3
 django-appconf==1.0.3
 django-autoslug==1.9.6
-django-compressor==2.3
-django-debug-toolbar==2.0
-django-haystack==2.8.1
+django-compressor==2.4
+django-debug-toolbar==2.2
+django-haystack==3.0b1
 django-ipware==2.1.0
-django-mdeditor==0.1.16
-django-uuslug==1.1.9
-elasticsearch==7.0.0
-elasticsearch-dsl==7.0.0
-idna==2.8
-ipaddress==1.0.22
+django-mdeditor==0.1.17
+django-uuslug==1.2.0
+elasticsearch==7.5.1
+elasticsearch-dsl==7.1.0
+idna==2.9
+ipaddress==1.0.23
 isort==4.3.21
-jieba==0.39
-jsonpickle==1.2
-lazy-object-proxy==1.4.2
+jieba==0.42.1
+jsonpickle==1.3
+lazy-object-proxy==1.4.3
 markdown2==2.3.8
 mccabe==0.6.1
 mistune==0.8.4
-mysqlclient==1.4.4
+mysqlclient==1.4.6
 olefile==0.46
-packaging==19.2
-Pillow==6.2.1
+packaging==20.1
+Pillow==7.0.0
 pycparser==2.19
-Pygments==2.4.2
-pylint==2.4.3
-pyparsing==2.4.2
-python-dateutil==2.8.0
+Pygments==2.5.2
+pylint==2.4.4
+pyparsing==2.4.6
+python-dateutil==2.8.1
 python-logstash==0.4.6
 python-memcached==1.59
 python-slugify==4.0.0
 pytz==2019.3
 raven==6.10.0
 rcssmin==1.0.6
-requests==2.22.0
+requests==2.23.0
 rjsmin==1.1.0
-six==1.12.0
+six==1.14.0
 sqlparse==0.3.0
 text-unidecode==1.3
-typed-ast==1.4.0
+typed-ast==1.4.1
 Unidecode==1.1.1
-urllib3==1.25.6
+urllib3==1.25.8
 webencodings==0.5.1
 WeRoBot==1.10.1
 Whoosh==2.7.4
-wrapt==1.11.2
+wrapt==1.12.0
 xmltodict==0.12.0