diff --git a/.github/workflows/publish-docs.yml b/.github/workflows/publish-docs.yml
index 3f628e6d0..f452c0b5b 100644
--- a/.github/workflows/publish-docs.yml
+++ b/.github/workflows/publish-docs.yml
@@ -31,7 +31,7 @@ jobs:
     - name: Install poetry
       run: |
         curl -O -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py
-        python get-poetry.py -y
+        python get-poetry.py -y --version 1.0.10
         echo "::set-env name=PATH::$HOME/.poetry/bin:$PATH"
         rm get-poetry.py
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b077c871e..d3b6881ec 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -28,7 +28,7 @@ jobs:
     - name: Install poetry
       run: |
         curl -O -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py
-        python get-poetry.py -y
+        python get-poetry.py -y --version 1.0.10
         echo "::set-env name=PATH::$HOME/.poetry/bin:$PATH"
         rm get-poetry.py
 
diff --git a/libtmux/_compat.py b/libtmux/_compat.py
index 5f3d0ad7f..448574b3e 100644
--- a/libtmux/_compat.py
+++ b/libtmux/_compat.py
@@ -20,22 +20,22 @@
     itervalues = lambda d: d.itervalues()
     iteritems = lambda d: d.iteritems()
 
+    from itertools import imap, izip
+
+    import ConfigParser as configparser
+    import cPickle as pickle
     from cStringIO import StringIO as BytesIO
     from StringIO import StringIO
-    import cPickle as pickle
-    import ConfigParser as configparser
-
-    from itertools import izip, imap
 
     range_type = xrange
 
     cmp = cmp
 
     input = raw_input
+    from collections import MutableMapping
     from string import lower as ascii_lowercase
-    import urlparse
 
-    from collections import MutableMapping
+    import urlparse
 
     exec('def reraise(tp, value, tb=None):\n raise tp, value, tb')
 
@@ -60,9 +60,9 @@ def console_to_str(s):
     itervalues = lambda d: iter(d.values())
     iteritems = lambda d: iter(d.items())
 
-    from io import StringIO, BytesIO
-    import pickle
     import configparser
+    import pickle
+    from io import BytesIO, StringIO
 
     izip = zip
     imap = map
@@ -71,9 +71,9 @@ def console_to_str(s):
     cmp = lambda a, b: (a > b) - (a < b)
 
     input = input
-    from string import ascii_lowercase
     import urllib.parse as urllib
     import urllib.parse as urlparse
+    from string import ascii_lowercase
     from urllib.request import urlretrieve
 
     console_encoding = sys.__stdout__.encoding
diff --git a/libtmux/common.py b/libtmux/common.py
index 6337913b0..dd7eafd64 100644
--- a/libtmux/common.py
+++ b/libtmux/common.py
@@ -15,7 +15,7 @@
 from distutils.version import LooseVersion
 
 from . import exc
-from ._compat import console_to_str, str_from_console, MutableMapping
+from ._compat import MutableMapping, console_to_str, str_from_console
 
 logger = logging.getLogger(__name__)
 
diff --git a/poetry.lock b/poetry.lock
index b9c3000f1..e615a5059 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -29,7 +29,7 @@ version = "1.4.4"
 [[package]]
 category = "dev"
 description = "Atomic file writes."
-marker = "python_version >= \"3\" and sys_platform == \"win32\" or sys_platform == \"win32\" or python_version < \"3\""
+marker = "python_version >= \"3\" and sys_platform == \"win32\" or python_version < \"3\""
 name = "atomicwrites"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -38,20 +38,22 @@ version = "1.4.0"
 [[package]]
 category = "dev"
 description = "Classes Without Boilerplate"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "attrs"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
+version = "20.2.0"
 
 [package.extras]
-azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
-dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
-docs = ["sphinx", "zope.interface"]
-tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+dev = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "sphinx-rtd-theme", "pre-commit"]
+docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
+tests = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
 
 [[package]]
 category = "dev"
 description = "Internationalization utilities"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "babel"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -106,7 +108,7 @@ description = "An easy safelist-based HTML-sanitizing tool."
 name = "bleach"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "3.1.5"
+version = "3.2.1"
 
 [package.dependencies]
 packaging = "*"
@@ -128,7 +130,7 @@ marker = "sys_platform == \"linux\""
 name = "cffi"
 optional = false
 python-versions = "*"
-version = "1.14.1"
+version = "1.14.3"
 
 [package.dependencies]
 pycparser = "*"
@@ -156,7 +158,7 @@ description = "Hosted coverage reports for GitHub, Bitbucket and Gitlab"
 name = "codecov"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.1.8"
+version = "2.1.10"
 
 [package.dependencies]
 coverage = "*"
@@ -168,7 +170,7 @@ description = "Cross-platform colored terminal text."
 name = "colorama"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
+version = "0.4.4"
 
 [[package]]
 category = "dev"
@@ -202,7 +204,7 @@ testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2)", "pytes
 [[package]]
 category = "dev"
 description = "Backports and enhancements for the contextlib module"
-marker = "python_version < \"3.4\" or python_version >= \"3\" and python_version < \"3.4\""
+marker = "python_version < \"3.4\""
 name = "contextlib2"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -214,7 +216,7 @@ description = "Code coverage measurement for Python"
 name = "coverage"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
-version = "5.2.1"
+version = "5.3"
 
 [package.extras]
 toml = ["toml"]
@@ -226,7 +228,7 @@ marker = "sys_platform == \"linux\""
 name = "cryptography"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
-version = "3.0"
+version = "3.1.1"
 
 [package.dependencies]
 cffi = ">=1.8,<1.11.3 || >1.11.3"
@@ -235,7 +237,6 @@ six = ">=1.4.1"
 [package.extras]
 docs = ["sphinx (>=1.6.5,<1.8.0 || >1.8.0,<3.1.0 || >3.1.0,<3.1.1 || >3.1.1)", "sphinx-rtd-theme"]
 docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
-idna = ["idna (>=2.1)"]
 pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
 ssh = ["bcrypt (>=3.1.5)"]
 test = ["pytest (>=3.6.0,<3.9.0 || >3.9.0,<3.9.1 || >3.9.1,<3.9.2 || >3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,<3.79.2 || >3.79.2)"]
@@ -272,7 +273,7 @@ description = "the modular source code checker: pep8 pyflakes and co"
 name = "flake8"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "3.8.3"
+version = "3.8.4"
 
 [package.dependencies]
 mccabe = ">=0.6.0,<0.7.0"
@@ -346,6 +347,7 @@ version = "2.10"
 [[package]]
 category = "dev"
 description = "Getting image size from png/jpeg/jpeg2000/gif file"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "imagesize"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -358,7 +360,7 @@ marker = "python_version < \"3.8\" or python_version >= \"3\" and python_version
 name = "importlib-metadata"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.7.0"
+version = "2.0.0"
 
 [package.dependencies]
 zipp = ">=0.5"
@@ -382,10 +384,11 @@ testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
 [[package]]
 category = "dev"
 description = "iniconfig: brain-dead simple config-ini parsing"
+marker = "python_version >= \"3\""
 name = "iniconfig"
 optional = false
 python-versions = "*"
-version = "1.0.1"
+version = "1.1.1"
 
 [[package]]
 category = "dev"
@@ -418,11 +421,11 @@ marker = "python_version >= \"3.6\""
 name = "isort"
 optional = false
 python-versions = ">=3.6,<4.0"
-version = "5.3.2"
+version = "5.6.4"
 
 [package.extras]
 colors = ["colorama (>=0.4.3,<0.5.0)"]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib", "tomlkit (>=0.5.3)"]
+pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
 requirements_deprecated_finder = ["pipreqs", "pip-api"]
 
 [[package]]
@@ -440,6 +443,7 @@ dev = ["testpath"]
 [[package]]
 category = "dev"
 description = "A very fast and expressive template engine."
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "jinja2"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
@@ -457,7 +461,7 @@ description = "Store and access your passwords safely."
 name = "keyring"
 optional = false
 python-versions = ">=3.6"
-version = "21.3.0"
+version = "21.4.0"
 
 [package.dependencies]
 SecretStorage = ">=3"
@@ -522,14 +526,6 @@ version = "5.0.0"
 [package.dependencies]
 six = ">=1.0.0,<2.0.0"
 
-[[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
-name = "more-itertools"
-optional = false
-python-versions = ">=3.5"
-version = "8.4.0"
-
 [[package]]
 category = "dev"
 description = "Experimental type system extensions for programs checked with the mypy typechecker."
@@ -570,7 +566,7 @@ version = "*"
 [[package]]
 category = "dev"
 description = "Object-oriented filesystem paths"
-marker = "python_version >= \"3\" and python_version < \"3.6\" or python_version < \"3.6\""
+marker = "python_version >= \"3\" and python_version < \"3.6\""
 name = "pathlib2"
 optional = false
 python-versions = "*"
@@ -594,7 +590,7 @@ description = "Query metadatdata from sdists / bdists / installed packages."
 name = "pkginfo"
 optional = false
 python-versions = "*"
-version = "1.5.0.1"
+version = "1.6.0"
 
 [package.extras]
 testing = ["nose", "coverage"]
@@ -602,6 +598,7 @@ testing = ["nose", "coverage"]
 [[package]]
 category = "dev"
 description = "plugin and hook calling mechanisms for python"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "pluggy"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -618,6 +615,7 @@ dev = ["pre-commit", "tox"]
 [[package]]
 category = "dev"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "py"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
@@ -662,11 +660,12 @@ description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
 optional = false
 python-versions = ">=3.5"
-version = "2.6.1"
+version = "2.7.2"
 
 [[package]]
 category = "dev"
 description = "Python parsing module"
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "pyparsing"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
@@ -718,14 +717,13 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "6.0.1"
+version = "6.1.1"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
 iniconfig = "*"
-more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
 py = ">=1.8.2"
@@ -766,7 +764,7 @@ marker = "python_version >= \"3\""
 name = "pytest-cov"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.10.0"
+version = "2.10.1"
 
 [package.dependencies]
 coverage = ">=4.4"
@@ -801,10 +799,10 @@ marker = "python_version >= \"3\""
 name = "pytest-mock"
 optional = false
 python-versions = ">=3.5"
-version = "3.2.0"
+version = "3.3.1"
 
 [package.dependencies]
-pytest = ">=2.7"
+pytest = ">=5.0"
 
 [package.extras]
 dev = ["pre-commit", "tox", "pytest-asyncio"]
@@ -826,8 +824,8 @@ category = "dev"
 description = "pytest plugin to re-run tests to eliminate flaky failures"
 name = "pytest-rerunfailures"
 optional = false
-python-versions = "*"
-version = "9.0"
+python-versions = ">=3.5"
+version = "9.1.1"
 
 [package.dependencies]
 pytest = ">=5.0"
@@ -857,7 +855,7 @@ description = "readme_renderer is a library for rendering \"readme\" description
 name = "readme-renderer"
 optional = false
 python-versions = "*"
-version = "26.0"
+version = "28.0"
 
 [package.dependencies]
 Pygments = ">=2.5.1"
@@ -888,7 +886,7 @@ marker = "python_version >= \"3.6\" and python_version < \"4.0\""
 name = "regex"
 optional = false
 python-versions = "*"
-version = "2020.7.14"
+version = "2020.10.23"
 
 [[package]]
 category = "dev"
@@ -963,6 +961,7 @@ version = "1.15.0"
 [[package]]
 category = "dev"
 description = "This package provides 26 stemmers for 25 languages generated from Snowball algorithms."
+marker = "python_version < \"3\" or python_version >= \"3\""
 name = "snowballstemmer"
 optional = false
 python-versions = "*"
@@ -1005,7 +1004,7 @@ description = "Python documentation generator"
 name = "sphinx"
 optional = false
 python-versions = ">=3.5"
-version = "3.2.0"
+version = "3.2.1"
 
 [package.dependencies]
 Jinja2 = ">=2.3"
@@ -1050,6 +1049,7 @@ tests = ["pytest", "mock"]
 [[package]]
 category = "dev"
 description = "sphinxcontrib-applehelp is a sphinx extension which outputs Apple help books"
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-applehelp"
 optional = false
 python-versions = ">=3.5"
@@ -1062,6 +1062,7 @@ test = ["pytest"]
 [[package]]
 category = "dev"
 description = "sphinxcontrib-devhelp is a sphinx extension which outputs Devhelp document."
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-devhelp"
 optional = false
 python-versions = ">=3.5"
@@ -1074,6 +1075,7 @@ test = ["pytest"]
 [[package]]
 category = "dev"
 description = "sphinxcontrib-htmlhelp is a sphinx extension which renders HTML help files"
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-htmlhelp"
 optional = false
 python-versions = ">=3.5"
@@ -1086,6 +1088,7 @@ test = ["pytest", "html5lib"]
 [[package]]
 category = "dev"
 description = "A sphinx extension which renders display math in HTML via JavaScript"
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-jsmath"
 optional = false
 python-versions = ">=3.5"
@@ -1097,6 +1100,7 @@ test = ["pytest", "flake8", "mypy"]
 [[package]]
 category = "dev"
 description = "sphinxcontrib-qthelp is a sphinx extension which outputs QtHelp document."
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-qthelp"
 optional = false
 python-versions = ">=3.5"
@@ -1109,6 +1113,7 @@ test = ["pytest"]
 [[package]]
 category = "dev"
 description = "sphinxcontrib-serializinghtml is a sphinx extension which outputs \"serialized\" HTML files (json and pickle)."
+marker = "python_version >= \"3\""
 name = "sphinxcontrib-serializinghtml"
 optional = false
 python-versions = ">=3.5"
@@ -1133,6 +1138,7 @@ test = ["pytest", "mock"]
 [[package]]
 category = "dev"
 description = "Python Library for Tom's Obvious, Minimal Language"
+marker = "python_version >= \"3.6\" and python_version < \"4.0\" or python_version >= \"3\""
 name = "toml"
 optional = false
 python-versions = "*"
@@ -1144,7 +1150,7 @@ description = "Fast, Extensible Progress Meter"
 name = "tqdm"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "4.48.2"
+version = "4.50.2"
 
 [package.extras]
 dev = ["py-make (>=0.1.0)", "twine", "argopt", "pydoc-markdown"]
@@ -1225,11 +1231,11 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 name = "urllib3"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
-version = "1.25.10"
+version = "1.25.11"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
-secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
+secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
 
 [[package]]
@@ -1257,7 +1263,7 @@ version = "0.5.1"
 [[package]]
 category = "dev"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-marker = "python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\" and (python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\")"
+marker = "python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\""
 name = "zipp"
 optional = false
 python-versions = ">=2.7"
@@ -1275,15 +1281,15 @@ testing = ["pathlib2", "unittest2", "jaraco.itertools", "func-timeout"]
 [[package]]
 category = "dev"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-marker = "python_version >= \"3\" and python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\" and (python_version < \"3.8\" or python_version >= \"3\" and python_version < \"3.8\") or python_version < \"3.8\""
+marker = "python_version >= \"3\" and python_version < \"3.8\" or python_version < \"3.8\""
 name = "zipp"
 optional = false
 python-versions = ">=3.6"
-version = "3.1.0"
+version = "3.3.2"
 
 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["jaraco.itertools", "func-timeout"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
 [extras]
 coverage = []
@@ -1316,8 +1322,8 @@ atomicwrites = [
     {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
 ]
 attrs = [
-    {file = "attrs-19.3.0-py2.py3-none-any.whl", hash = "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c"},
-    {file = "attrs-19.3.0.tar.gz", hash = "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"},
+    {file = "attrs-20.2.0-py2.py3-none-any.whl", hash = "sha256:fce7fc47dfc976152e82d53ff92fa0407700c21acd20886a13777a0d20e655dc"},
+    {file = "attrs-20.2.0.tar.gz", hash = "sha256:26b54ddbbb9ee1d34d5d3668dd37d6cf74990ab23c828c2888dccdceee395594"},
 ]
 babel = [
     {file = "Babel-2.8.0-py2.py3-none-any.whl", hash = "sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4"},
@@ -1331,42 +1337,50 @@ black = [
     {file = "black-20.8b1.tar.gz", hash = "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"},
 ]
 bleach = [
-    {file = "bleach-3.1.5-py2.py3-none-any.whl", hash = "sha256:2bce3d8fab545a6528c8fa5d9f9ae8ebc85a56da365c7f85180bfe96a35ef22f"},
-    {file = "bleach-3.1.5.tar.gz", hash = "sha256:3c4c520fdb9db59ef139915a5db79f8b51bc2a7257ea0389f30c846883430a4b"},
+    {file = "bleach-3.2.1-py2.py3-none-any.whl", hash = "sha256:9f8ccbeb6183c6e6cddea37592dfb0167485c1e3b13b3363bc325aa8bda3adbd"},
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