Index: sasl-0.3.1/sasl/saslwrapper.pyx
===================================================================
--- sasl-0.3.1.orig/sasl/saslwrapper.pyx
+++ sasl-0.3.1/sasl/saslwrapper.pyx
@@ -14,8 +14,6 @@
 
 #cython: language_level=3
 
-from six import string_types, PY3
-
 from libcpp cimport bool
 from libc.stdint cimport uint32_t
 from libcpp.string cimport string as string_t
@@ -36,7 +34,7 @@ cdef extern from 'saslwrapper.h' namespa
 
 
 cpdef string_t to_bytes(bytes_or_str):
-    if PY3 and isinstance(bytes_or_str, string_types):
+    if isinstance(bytes_or_str, str):
         return bytes_or_str.encode('utf-8')
     return bytes_or_str
 
@@ -53,7 +51,7 @@ cdef class Client:
     cpdef setAttr(self, key, value):
         if isinstance(value, int):
             return self._this.setAttr(to_bytes(key), <uint32_t> value)
-        elif isinstance(value, string_types):
+        elif isinstance(value, str):
             return self._this.setAttr(to_bytes(key), <string_t> to_bytes(value))
 
     cpdef init(self):
Index: sasl-0.3.1/setup.py
===================================================================
--- sasl-0.3.1.orig/setup.py
+++ sasl-0.3.1/setup.py
@@ -54,7 +54,7 @@ setup(name='sasl',
         'Programming Language :: Python :: 3',
       ],
       packages=['sasl'],
-      install_requires=['six'],
+      install_requires=[],
       ext_modules=cythonize([sasl_module]),
       include_package_data=True,
       license='Apache License, Version 2.0')