diff --git a/docs/conf.py b/docs/conf.py
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -11,7 +11,6 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-from __future__ import print_function
 import datetime
 import sys
 import os
diff --git a/examples/functions.py b/examples/functions.py
--- a/examples/functions.py
+++ b/examples/functions.py
@@ -3,7 +3,6 @@
 Simple example of a test generator which just produces data on some
 mathematical functions, keyed off of the current time.
 """
-from __future__ import print_function
 from lnt.testing import Machine, Run, TestSamples, Report
 import math
 import random
diff --git a/examples/run_to_csv.py b/examples/run_to_csv.py
--- a/examples/run_to_csv.py
+++ b/examples/run_to_csv.py
@@ -1,7 +1,5 @@
 """Convert the JSON run file passed on stdin to a csv"""
-from __future__ import print_function
 import json
-
 import sys
 
 
diff --git a/lnt/external/stats/pstat.py b/lnt/external/stats/pstat.py
--- a/lnt/external/stats/pstat.py
+++ b/lnt/external/stats/pstat.py
@@ -105,8 +105,6 @@
 ##
 ## 11/08/98 ... fixed aput to output large arrays correctly
 
-from __future__ import absolute_import
-from __future__ import print_function
 import string, copy
 from types import *
 
diff --git a/lnt/external/stats/stats.py b/lnt/external/stats/stats.py
--- a/lnt/external/stats/stats.py
+++ b/lnt/external/stats/stats.py
@@ -222,9 +222,6 @@
 ##              changed name of skewness and askewness to skew and askew
 ##              fixed (a)histogram (which sometimes counted points <lowerlimit)
 
-from __future__ import absolute_import
-from __future__ import print_function
-from builtins import input
 from . import pstat        # required 3rd party module
 import math, string, copy  # required python modules
 from types import *
diff --git a/lnt/formats/PlistFormat2.py b/lnt/formats/PlistFormat2.py
deleted file mode 100644
--- a/lnt/formats/PlistFormat2.py
+++ /dev/null
@@ -1,17 +0,0 @@
-import plistlib
-
-
-def _matches_format(path_or_file):
-    try:
-        plistlib.readPlist(path_or_file)
-        return True
-    except Exception:
-        return False
-
-
-format = {
-    'name': 'plist',
-    'predicate': _matches_format,
-    'read': plistlib.readPlist,
-    'write': plistlib.writePlist,
-}
diff --git a/lnt/formats/__init__.py b/lnt/formats/__init__.py
--- a/lnt/formats/__init__.py
+++ b/lnt/formats/__init__.py
@@ -7,13 +7,8 @@
 callable taking a Python object to write, and the path_or_file to write to.
 """
 
-from __future__ import absolute_import
 from typing import List, Dict
-try:
-    from plistlib import readPlist  # noqa: F401  # used to test exception
-    from .PlistFormat2 import format as plist  # for Python 2
-except ImportError:
-    from .PlistFormat import format as plist  # for Python 3
+from .PlistFormat import format as plist
 from .JSONFormat import format as json
 
 formats = [plist, json]  # type: List[Dict]
diff --git a/lnt/lnttool/__init__.py b/lnt/lnttool/__init__.py
--- a/lnt/lnttool/__init__.py
+++ b/lnt/lnttool/__init__.py
@@ -1,2 +1 @@
-from __future__ import absolute_import
 from .main import main  # noqa: F401  # LNT entrypoint
diff --git a/lnt/lnttool/admin.py b/lnt/lnttool/admin.py
--- a/lnt/lnttool/admin.py
+++ b/lnt/lnttool/admin.py
@@ -1,6 +1,4 @@
 #!/usr/bin/env python
-from future import standard_library
-standard_library.install_aliases()
 import click
 from importlib import import_module
 from .common import submit_options
diff --git a/lnt/lnttool/create.py b/lnt/lnttool/create.py
--- a/lnt/lnttool/create.py
+++ b/lnt/lnttool/create.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 import click
 import platform
 
@@ -113,7 +112,6 @@
 * INSTANCE_PATH should point to a directory that will keep
 LNT configuration.
     """
-    from builtins import bytes
     from .common import init_logger
     import hashlib
     import lnt.server.db.migrate
diff --git a/lnt/lnttool/main.py b/lnt/lnttool/main.py
--- a/lnt/lnttool/main.py
+++ b/lnt/lnttool/main.py
@@ -1,5 +1,4 @@
 """Implement the command line 'lnt' tool."""
-from __future__ import print_function
 from .common import init_logger
 from .common import submit_options
 from .convert import action_convert
diff --git a/lnt/lnttool/viewcomparison.py b/lnt/lnttool/viewcomparison.py
--- a/lnt/lnttool/viewcomparison.py
+++ b/lnt/lnttool/viewcomparison.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 import click
 import time
 import urllib.request
diff --git a/lnt/server/db/testsuite.py b/lnt/server/db/testsuite.py
--- a/lnt/server/db/testsuite.py
+++ b/lnt/server/db/testsuite.py
@@ -2,7 +2,6 @@
 Database models for the TestSuites abstraction.
 """
 
-from __future__ import absolute_import
 import json
 import lnt
 from . import util
diff --git a/lnt/server/db/testsuitedb.py b/lnt/server/db/testsuitedb.py
--- a/lnt/server/db/testsuitedb.py
+++ b/lnt/server/db/testsuitedb.py
@@ -5,7 +5,6 @@
 suite metadata, so we only create the classes at runtime.
 """
 
-from __future__ import absolute_import
 import datetime
 import json
 import os
diff --git a/lnt/server/reporting/dailyreport.py b/lnt/server/reporting/dailyreport.py
--- a/lnt/server/reporting/dailyreport.py
+++ b/lnt/server/reporting/dailyreport.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 from lnt.server.reporting.analysis import REGRESSED, UNCHANGED_FAIL
 from lnt.server.reporting.report import RunResult, RunResults, report_css_styles, pairs, OrderAndHistory
 from lnt.util import multidict
diff --git a/lnt/server/ui/app.py b/lnt/server/ui/app.py
--- a/lnt/server/ui/app.py
+++ b/lnt/server/ui/app.py
@@ -1,6 +1,3 @@
-from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
 import io
 import logging
 import logging.handlers
diff --git a/lnt/server/ui/filters.py b/lnt/server/ui/filters.py
--- a/lnt/server/ui/filters.py
+++ b/lnt/server/ui/filters.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 import io
 import datetime
 import pprint
diff --git a/lnt/server/ui/views.py b/lnt/server/ui/views.py
--- a/lnt/server/ui/views.py
+++ b/lnt/server/ui/views.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 import datetime
 import json
 import os
diff --git a/lnt/testing/profile/__init__.py b/lnt/testing/profile/__init__.py
--- a/lnt/testing/profile/__init__.py
+++ b/lnt/testing/profile/__init__.py
@@ -1,7 +1,6 @@
 # This is the profile implementation registry. Register new profile
 # implementations here.
 
-from __future__ import absolute_import
 from .profilev1impl import ProfileV1
 from .profilev2impl import ProfileV2
 from .perf import LinuxPerfProfile
diff --git a/lnt/testing/profile/cPerf.cpp b/lnt/testing/profile/cPerf.cpp
--- a/lnt/testing/profile/cPerf.cpp
+++ b/lnt/testing/profile/cPerf.cpp
@@ -1067,7 +1067,6 @@
                                       "Import perf.data from a filename"},
                                      {NULL, NULL, 0, NULL}};
 
-#if PY_MAJOR_VERSION >= 3
 static PyModuleDef cPerfModuleDef = {PyModuleDef_HEAD_INIT,
                                      "cPerf",
                                      nullptr,
@@ -1077,17 +1076,10 @@
                                      nullptr,
                                      nullptr,
                                      nullptr};
-#endif
 
-#if PY_MAJOR_VERSION >= 3
 PyMODINIT_FUNC PyInit_cPerf(void) {
   return PyModule_Create(&cPerfModuleDef);
 }
-#else
-PyMODINIT_FUNC initcPerf(void) {
-  (void)Py_InitModule("cPerf", cPerfMethods);
-}
-#endif
 
 #else // STANDALONE
 
diff --git a/lnt/testing/profile/perf.py b/lnt/testing/profile/perf.py
--- a/lnt/testing/profile/perf.py
+++ b/lnt/testing/profile/perf.py
@@ -1,4 +1,3 @@
-from __future__ import absolute_import
 from lnt.util import logger
 from .profile import ProfileImpl
 from .profilev1impl import ProfileV1
diff --git a/lnt/testing/profile/profilev1impl.py b/lnt/testing/profile/profilev1impl.py
--- a/lnt/testing/profile/profilev1impl.py
+++ b/lnt/testing/profile/profilev1impl.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 from lnt.testing.profile.profile import ProfileImpl
 import pickle
 import zlib
diff --git a/lnt/testing/profile/profilev2impl.py b/lnt/testing/profile/profilev2impl.py
--- a/lnt/testing/profile/profilev2impl.py
+++ b/lnt/testing/profile/profilev2impl.py
@@ -1,7 +1,3 @@
-from __future__ import absolute_import
-from builtins import range
-from future import standard_library
-standard_library.install_aliases()
 from .profile import ProfileImpl
 import bz2
 import copy
diff --git a/lnt/testing/util/rcs.py b/lnt/testing/util/rcs.py
--- a/lnt/testing/util/rcs.py
+++ b/lnt/testing/util/rcs.py
@@ -1,5 +1,3 @@
-from future import standard_library
-standard_library.install_aliases()
 import re
 import os
 from lnt.util import logger
diff --git a/lnt/tests/builtintest.py b/lnt/tests/builtintest.py
--- a/lnt/tests/builtintest.py
+++ b/lnt/tests/builtintest.py
@@ -2,7 +2,6 @@
 Base class for builtin-in tests.
 """
 
-from __future__ import print_function
 import sys
 import os
 
diff --git a/lnt/tests/compile.py b/lnt/tests/compile.py
--- a/lnt/tests/compile.py
+++ b/lnt/tests/compile.py
@@ -1,7 +1,4 @@
 """Single file compile-time performance testing"""
-from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
 import errno
 import hashlib
 import json
diff --git a/lnt/tests/nt.py b/lnt/tests/nt.py
--- a/lnt/tests/nt.py
+++ b/lnt/tests/nt.py
@@ -1,8 +1,4 @@
 """LLVM test-suite compile and execution tests"""
-from __future__ import absolute_import
-from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
 import csv
 import os
 import platform
diff --git a/lnt/tests/test_suite.py b/lnt/tests/test_suite.py
--- a/lnt/tests/test_suite.py
+++ b/lnt/tests/test_suite.py
@@ -1,5 +1,4 @@
 """LLVM test-suite"""
-from __future__ import print_function
 import subprocess
 import tempfile
 import json
diff --git a/lnt/util/ImportData.py b/lnt/util/ImportData.py
--- a/lnt/util/ImportData.py
+++ b/lnt/util/ImportData.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 from lnt.util import NTEmailReport
 from contextlib import closing
 from lnt.util import logger
diff --git a/lnt/util/ServerUtil.py b/lnt/util/ServerUtil.py
--- a/lnt/util/ServerUtil.py
+++ b/lnt/util/ServerUtil.py
@@ -1,9 +1,6 @@
 """
 Utility for submitting files to a web server over HTTP.
 """
-from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
 import sys
 import urllib.request
 import urllib.parse
diff --git a/lnt/util/stats.py b/lnt/util/stats.py
--- a/lnt/util/stats.py
+++ b/lnt/util/stats.py
@@ -1,4 +1,3 @@
-from __future__ import division
 import math
 from lnt.external.stats.stats import mannwhitneyu as mannwhitneyu_large
 from functools import reduce
diff --git a/lnt/util/wsgi_restart.py b/lnt/util/wsgi_restart.py
--- a/lnt/util/wsgi_restart.py
+++ b/lnt/util/wsgi_restart.py
@@ -1,7 +1,4 @@
 # This code lifted from the mod_wsgi docs.
-from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
 import os
 from pathlib import Path
 from typing import Sequence
diff --git a/runtime.txt b/runtime.txt
deleted file mode 100644
--- a/runtime.txt
+++ /dev/null
@@ -1 +0,0 @@
-python-2.7.10
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,11 @@
-from __future__ import print_function
 import lnt
 import os
 from sys import platform as _platform
 import sys
 from setuptools import setup, find_packages, Extension
 
-if sys.version_info < (3, 6) and sys.version_info[:2] != (2, 7):
-    raise RuntimeError("Python 2.7 or Python 3.6 or higher required.")
+if sys.version_info < (3, 6):
+    raise RuntimeError("Python 3.6 or higher required.")
 
 cflags = []
 
@@ -81,7 +80,7 @@
         'License :: OSI Approved :: Apache-2.0 with LLVM exception',
         'Natural Language :: English',
         'Operating System :: OS Independent',
-        'Programming Language :: Python',
+        'Programming Language :: Python :: 3',
         'Topic :: Software Development :: Quality Assurance',
         'Topic :: Software Development :: Testing',
     ],
@@ -133,12 +132,11 @@
         "click==6.7",
         "pyyaml==5.1.2",
         "requests",
-        "future",
         "lit==0.11.1",
         "certifi"
     ],
 
     ext_modules=[cPerf],
 
-    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*',
+    python_requires='>=3.6.*',
 )
diff --git a/tests/SharedInputs/FakeCompilers/fakecompiler.py b/tests/SharedInputs/FakeCompilers/fakecompiler.py
--- a/tests/SharedInputs/FakeCompilers/fakecompiler.py
+++ b/tests/SharedInputs/FakeCompilers/fakecompiler.py
@@ -3,8 +3,6 @@
 """
 Utilities for "faking" a compiler response.
 """
-from __future__ import print_function
-
 import inspect
 import os
 import sys
diff --git a/tests/SharedInputs/create_temp_instance.py b/tests/SharedInputs/create_temp_instance.py
--- a/tests/SharedInputs/create_temp_instance.py
+++ b/tests/SharedInputs/create_temp_instance.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 import sys
 import shutil
 import os.path
diff --git a/tests/server/db/ImportV4TestSuiteInstance.py b/tests/server/db/ImportV4TestSuiteInstance.py
--- a/tests/server/db/ImportV4TestSuiteInstance.py
+++ b/tests/server/db/ImportV4TestSuiteInstance.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 # Check the import process into a v4 test suite DB.
 #
 # We first construct a temporary LNT instance.
diff --git a/tests/server/db/Migrations.py b/tests/server/db/Migrations.py
--- a/tests/server/db/Migrations.py
+++ b/tests/server/db/Migrations.py
@@ -2,7 +2,6 @@
 #
 # RUN: python %s %t
 
-from __future__ import print_function
 import logging
 import os
 import re
diff --git a/tests/server/ui/V4Pages.py b/tests/server/ui/V4Pages.py
--- a/tests/server/ui/V4Pages.py
+++ b/tests/server/ui/V4Pages.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 # Perform basic sanity checking of the V4 UI pages.
 #
 # create temporary instance
@@ -22,8 +21,6 @@
 #
 # RUN: python %s %t.instance %{tidylib}
 
-from future import standard_library
-standard_library.install_aliases()
 import logging
 import re
 import sys
diff --git a/tests/testing/CalltreeDataLoading.py b/tests/testing/CalltreeDataLoading.py
--- a/tests/testing/CalltreeDataLoading.py
+++ b/tests/testing/CalltreeDataLoading.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 # Check the model bindings for test suite instances.
 #
 # RUN: rm -f %t.db
diff --git a/tests/utils/blast.py b/tests/utils/blast.py
--- a/tests/utils/blast.py
+++ b/tests/utils/blast.py
@@ -4,11 +4,9 @@
 This should only be used for (load) testing.  It will add a bunch
 of bad data to your instance, so don't use it on a production instance.
 """
-from __future__ import print_function
 ## Just to make sure there are no syntax errors in this.  This does not
 ## actually run a blast.
 # RUN: python %{src_root}/tests/utils/blast.py
-from builtins import range
 import time
 import subprocess
 import os
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,5 @@
 [tox]
-envlist = py27
-          py3
+envlist = py3
           mypy
           flake8
           docs
@@ -19,14 +18,12 @@
 deps =
     mypy >= 0.910
     sqlalchemy-stubs
-    future
 commands =
     # Nowhere close to passing yet, but nice to have. The option
     # --no-incremental is currently needed to suppress warnings about
     # UpdatedBase when running tests several times. Future versions of
     # mypy should be checked to see if it can be removed and not get
     # warnings after running tox several times.
-    - mypy --no-incremental --junit-xml=junit-{envname}.xml --py2 --ignore-missing-imports lnt
     - mypy --no-incremental --junit-xml=junit-{envname}.xml --ignore-missing-imports lnt
 
 [testenv:flake8]
@@ -43,7 +40,6 @@
 deps =
     sphinx<2.0.0
     sphinx_bootstrap_theme
-    future
 
 commands =
     make -C {toxinidir}/docs/ html