diff --git a/pyminifier/__init__.py b/pyminifier/__init__.py
index 0e61063..63f7ccd 100644
--- a/pyminifier/__init__.py
+++ b/pyminifier/__init__.py
@@ -68,7 +68,7 @@
 # Import built-in modules
 import os, sys, re, io
 from optparse import OptionParser
-from collections import Iterable
+from collections.abc import Iterable
 
 # Import our own modules
 from . import minification
diff --git a/pyminifier/analyze.py b/pyminifier/analyze.py
index e1968d8..c853521 100644
--- a/pyminifier/analyze.py
+++ b/pyminifier/analyze.py
@@ -6,10 +6,7 @@
 
 # Import builtins
 import os, sys, re, tokenize, keyword
-try:
-    import cStringIO as io
-except ImportError: # Ahh, Python 3
-    import io
+import io
 
 # Globals
 py3 = False
diff --git a/pyminifier/minification.py b/pyminifier/minification.py
index 915337c..54e4131 100644
--- a/pyminifier/minification.py
+++ b/pyminifier/minification.py
@@ -6,10 +6,7 @@
 
 # Import built-in modules
 import re, tokenize, keyword
-try:
-    import cStringIO as io
-except ImportError: # We're using Python 3
-    import io
+import io
 
 # Import our own modules
 from . import analyze, token_utils
diff --git a/pyminifier/obfuscate.py b/pyminifier/obfuscate.py
index a54455a..7c15a6d 100755
--- a/pyminifier/obfuscate.py
+++ b/pyminifier/obfuscate.py
@@ -13,12 +13,9 @@
 from . import analyze
 from . import token_utils
 
-if not isinstance(sys.version_info, tuple):
-    if sys.version_info.major == 3:
-        unichr = chr # So we can support both 2 and 3
 
 try:
-    unichr(0x10000) # Will throw a ValueError on narrow Python builds
+    chr(0x10000) # Will throw a ValueError on narrow Python builds
     HIGHEST_UNICODE = 0x10FFFF # 1114111
 except:
     HIGHEST_UNICODE = 0xFFFF # 65535
diff --git a/pyminifier/token_utils.py b/pyminifier/token_utils.py
index 577b174..c7afa4c 100644
--- a/pyminifier/token_utils.py
+++ b/pyminifier/token_utils.py
@@ -6,10 +6,7 @@
 """
 
 import tokenize
-try:
-    import cStringIO as io
-except ImportError: # We're using Python 3
-    import io
+import io
 
 def untokenize(tokens):
     """
diff --git a/setup.py b/setup.py
index 65d80fb..62bbaaf 100755
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,6 @@
 import sys
 import pyminifier
 from setuptools import setup
-from distutils.command.install import INSTALL_SCHEMES
-
-for scheme in INSTALL_SCHEMES.values():
-    scheme['data'] = scheme['purelib']
-
-extra = {}
 
 if isinstance(sys.version_info, tuple):
     major = sys.version_info[0]
@@ -14,27 +8,14 @@
     major = sys.version_info.major
 
 if major == 2:
-    from distutils.command.build_py import build_py
-elif major == 3:
-    extra['use_2to3'] = True # Automatically convert to Python 3; love it!
-    try:
-        from distutils.command.build_py import build_py_2to3 as build_py
-    except ImportError:
-        print("Python 3.X support requires the 2to3 tool.")
-        print(
-            "It normally comes with Python 3.X but (apparenty) not on your "
-            "distribution.\nPlease find out what package you need to get 2to3"
-            "and install it.")
-        sys.exit(1)
-
-cmdclass = {'build_py': build_py}
+    print("Python 2 is no longer supported.")
+    sys.exit(1)
 
 setup(
     name="pyminifier",
     version=pyminifier.__version__,
     description="Python code minifier, obfuscator, and compressor",
     author=pyminifier.__author__,
-    cmdclass=cmdclass,
     author_email="daniel.mcdougall@liftoffsoftware.com",
     url="https://github.com/liftoff/pyminifier",
     license="Proprietary",
@@ -63,5 +44,4 @@
         ],
     },
     test_suite = "tests",
-    **extra
 )