diff --git a/.travis.yml b/.travis.yml
index 08e9a4b55e..77f2e11968 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,6 @@ language: python
 
 sudo: false
 python:
-  - 2.6
   - 2.7
   - 3.3
   - 3.4
diff --git a/README.rst b/README.rst
index fe33926a1c..93ca5f8715 100644
--- a/README.rst
+++ b/README.rst
@@ -137,8 +137,8 @@ Project details
 ---------------
 
 ==============  ==========================================================
-tmux support    1.8, 1.9a, 2.0, 2.1, 2.2, 2.3
-python support  2.6, 2.7, >= 3.3, pypy, pypy3
+tmux support    1.8, 1.9a, 2.0, 2.1, 2.2, 2.3, 2.4
+python support  2.7, >= 3.3, pypy, pypy3
 config support  yaml, json, python dict
 Source          https://github.com/tony/tmuxp
 Docs            http://tmuxp.git-pull.com
diff --git a/requirements/base.txt b/requirements/base.txt
index 39c85b8836..daea08343e 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,4 +1,4 @@
 kaptan>=0.5.7
-libtmux==0.6.5 # Updated from 0.6.4
+libtmux==0.7.1 # Updated from 0.6.5
 click==6.7
 colorama==0.3.9
diff --git a/setup.py b/setup.py
index d8c8ad6ddf..bfaf71dd57 100644
--- a/setup.py
+++ b/setup.py
@@ -61,7 +61,6 @@ def run_tests(self):
         'Environment :: Web Environment',
         'Intended Audience :: Developers',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
diff --git a/tests/test_workspacebuilder.py b/tests/test_workspacebuilder.py
index ea8adfa321..a8e958614c 100644
--- a/tests/test_workspacebuilder.py
+++ b/tests/test_workspacebuilder.py
@@ -12,6 +12,7 @@
 
 from . import fixtures_dir
 from libtmux import Window
+from libtmux.common import has_gte_version
 from libtmux.test import temp_session
 from tmuxp import config, exc
 from tmuxp._compat import text_type
@@ -242,6 +243,9 @@ def test_window_options(session):
     sconfig = sconfig.import_config(yaml_config).get()
     sconfig = config.expand(sconfig)
 
+    if has_gte_version('2.3'):
+        sconfig['windows'][0]['options']['pane-border-format'] = ' #P '
+
     builder = WorkspaceBuilder(sconf=sconfig)
 
     window_count = len(session._windows)  # current window count
@@ -253,6 +257,8 @@ def test_window_options(session):
             assert len(s._windows) == window_count
         assert isinstance(w, Window)
         assert w.show_window_option('main-pane-height') == 5
+        if has_gte_version('2.3'):
+            assert w.show_window_option('pane-border-format') == ' #P '
 
         assert len(s._windows) == window_count
         window_count += 1
@@ -262,7 +268,6 @@ def test_window_options(session):
 @pytest.mark.flaky(reruns=5)
 def test_window_options_after(session):
     yaml_config = loadfixture("workspacebuilder/window_options_after.yaml")
-    s = session
     sconfig = kaptan.Kaptan(handler='yaml')
     sconfig = sconfig.import_config(yaml_config).get()
     sconfig = config.expand(sconfig)
@@ -274,8 +279,8 @@ def assert_last_line(p, s):
         correct = False
         for _ in range(10):
             pane_out = p.cmd('capture-pane', '-p', '-J').stdout
-            # delete trailing empty lines for tmux 1.8...
-            while not pane_out[-1].strip(): pane_out.pop()
+            while not pane_out[-1].strip():  # delete trailing lines tmux 1.8
+                pane_out.pop()
             if len(pane_out) > 1 and pane_out[-2].strip() == s:
                 correct = True
                 break
@@ -291,10 +296,11 @@ def assert_last_line(p, s):
     for i, pane in enumerate(session.attached_window.panes):
         assert assert_last_line(pane, str(i)), \
                 "Initial command did not execute properly/" + str(i)
-        pane.cmd('send-keys', 'Up') # Will repeat echo
-        pane.enter()                # in each iteration
-        assert assert_last_line(pane, str(i)), \
-                "Repeated command did not execute properly/" + str(i)
+        pane.cmd('send-keys', 'Up')  # Will repeat echo
+        pane.enter()                 # in each iteration
+        assert assert_last_line(pane, str(i)), (
+               "Repeated command did not execute properly/" + str(i)
+        )
 
     session.cmd('send-keys', ' echo moo')
     session.cmd('send-keys', 'Enter')
diff --git a/tmuxp/cli.py b/tmuxp/cli.py
index 70296a7f67..7159b350a2 100644
--- a/tmuxp/cli.py
+++ b/tmuxp/cli.py
@@ -14,7 +14,7 @@
 import click
 import kaptan
 from click.exceptions import FileError
-from libtmux.common import has_required_tmux_version, which
+from libtmux.common import has_minimum_version, which
 from libtmux.exc import TmuxCommandNotFound
 from libtmux.server import Server
 
@@ -318,7 +318,7 @@ def cli(log_level):
     See detailed documentation and examples at:
     http://tmuxp.readthedocs.io/en/latest/"""
     try:
-        has_required_tmux_version()
+        has_minimum_version()
     except TmuxCommandNotFound:
         click.echo('tmux not found. tmuxp requires you install tmux first.')
         sys.exit()
diff --git a/tox.ini b/tox.ini
index c3102c4c0c..cf419f3250 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py33, py34, py35
+envlist = py27, py33, py34, py35, py36
 
 [testenv]
 commands = make test []