diff --git a/setup.py b/setup.py
index ace2f628..04273744 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@
         "PyYAML>3.10",
         "pytz>=2014.1",
         "requests-futures>0.9.0",
-        "paramiko<2.5.0",
+        "paramiko>1.8.0,<3.0.0",
         "requests<3.0.0",
         "retrying",
         "six>=1.10.0",
diff --git a/tox_acceptance.ini b/tox_acceptance.ini
index a3b3567a..de8b9bbe 100644
--- a/tox_acceptance.ini
+++ b/tox_acceptance.ini
@@ -1,5 +1,7 @@
+# this file is run via a Docker container
+# see docker/itest/run_tests.sh for more details
 [tox]
-envlist = py{27,36}-unittest, py{27,36}-kafka{10,11}-dockeritest
+envlist = py{27,36}-kafka{10,11}-dockeritest
 tox_pip_extensions_ext_pip_custom_platform = true
 tox_pip_extensions_ext_venv_update = true
 distdir = {toxworkdir}/dist_acceptance