--- a/airspeed/__init__.py
+++ b/airspeed/__init__.py
@@ -6,7 +6,18 @@
 import string
 import sys
 
-import six
+import io
+
+def six_reraise(tp, value, tb=None):
+    try:
+        if value is None:
+            value = tp()
+        if value.__traceback__ is not tb:
+            raise value.with_traceback(tb)
+        raise value
+    finally:
+        value = None
+        tb = None
 
 __all__ = [
     'Template',
@@ -207,14 +218,14 @@
         return template
 
 
-class StoppableStream(six.StringIO):
+class StoppableStream(io.StringIO):
     def __init__(self, buf=''):
         self.stop = False
-        six.StringIO.__init__(self, buf)
+        io.StringIO.__init__(self, buf)
 
     def write(self, s):
         if not self.stop:
-            six.StringIO.write(self, s)
+            io.StringIO.write(self, s)
 
 
 ###############################################################################
@@ -358,7 +369,7 @@
             raise
         except:
             exc_info = sys.exc_info()
-            six.reraise(TemplateExecutionError,
+            six_reraise(TemplateExecutionError,
                         TemplateExecutionError(self, exc_info), exc_info[2])
 
 
@@ -621,7 +632,7 @@
             # If list make sure index is an integer
             if isinstance(
                     result, list) and not isinstance(
-                    array_index, six.integer_types):
+                    array_index, int):
                 raise ValueError(
                     "expected integer for array index, got '%s'" %
                     (array_index))
@@ -760,7 +771,7 @@
         if is_string(value):
             stream.write(value)
         else:
-            stream.write(six.text_type(value))
+            stream.write(str(value))
 
 
 class Null:
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,7 +24,6 @@
 
 [options]
 install_requires =
-    six
     cachetools
 
 packages = find:
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -17,7 +17,7 @@
     sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
     import airspeed
 
-import six
+import io
 
 
 class TemplateTestCase(TestCase):
@@ -338,7 +338,7 @@
 
     def test_merge_to_stream(self):
         template = airspeed.Template('Hello $name!')
-        output = six.StringIO()
+        output = io.StringIO()
         template.merge_to({"name": "Chris"}, output)
         self.assertEqual('Hello Chris!', output.getvalue())
 
@@ -981,7 +981,7 @@
             def __str__(self):
                 return self.value
         value = Clazz(u'£12,000')
-        self.assertEqual(six.text_type(value), template.merge(locals()))
+        self.assertEqual(str(value), template.merge(locals()))
 
     def test_can_define_macros_in_parsed_files(self):
         class Loader: