diff --git a/setup.cfg b/setup.cfg
index faabb83f..ce171654 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -4,6 +4,3 @@ test=pytest
 
 [bdist_wheel]
 universal = 1
-
-[semantic_release]
-version_variable = werobot/__init__.py:__version__
diff --git a/tests/test_robot.py b/tests/test_robot.py
index 41c877f8..f90243bc 100644
--- a/tests/test_robot.py
+++ b/tests/test_robot.py
@@ -2,7 +2,6 @@
 
 import hashlib
 import time
-import six
 import os
 import pytest
 
@@ -34,8 +33,7 @@ def test_signature_checker():
     sign = [token, timestamp, nonce]
     sign.sort()
     sign = ''.join(sign)
-    if six.PY3:
-        sign = sign.encode()
+    sign = sign.encode()
     sign = hashlib.sha1(sign).hexdigest()
 
     assert robot.check_signature(timestamp, nonce, sign)
diff --git a/werobot/__init__.py b/werobot/__init__.py
index aeb9d88a..5cb0dd83 100644
--- a/werobot/__init__.py
+++ b/werobot/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '1.10.1'
+__version__ = '1.11.0'
 __author__ = 'whtsky'
 __license__ = 'MIT'