diff --git a/.ci/travis/run.sh b/.ci/travis/run.sh
index 818386336..9a4afa62f 100755
--- a/.ci/travis/run.sh
+++ b/.ci/travis/run.sh
@@ -20,9 +20,9 @@ python setup.py develop
 
 # run tests (with coverage)
 if [[ $PYVER == '2.7' ]] && [[ "$(uname -s)" != 'Darwin' ]]; then
-    PSUTIL_TESTING=1 python -Wa -m coverage run psutil/tests/__main__.py
+    PSUTIL_TESTING=1 python -Wa -m coverage run psutil/tests/runner.py
 else
-    PSUTIL_TESTING=1 python -Wa psutil/tests/__main__.py
+    PSUTIL_TESTING=1 python -Wa psutil/tests/runner.py
 fi
 
 if [ "$PYVER" == "2.7" ] || [ "$PYVER" == "3.6" ]; then
diff --git a/Makefile b/Makefile
index 812ba9c2c..0dadfca3f 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
 # You can set the variables below from the command line.
 
 PYTHON = python3
-TSCRIPT = psutil/tests/__main__.py
+TSCRIPT = psutil/tests/runner.py
 ARGS =
 # List of nice-to-have dev libs.
 DEPS = \
@@ -155,7 +155,7 @@ test-by-name:  ## e.g. make test-by-name ARGS=psutil.tests.test_system.TestSyste
 
 test-failed:  ## Re-run tests which failed on last run
 	${MAKE} install
-	$(TEST_PREFIX) $(PYTHON) -c "import psutil.tests.runner as r; r.run(last_failed=True)"
+	$(TEST_PREFIX) $(PYTHON) $(TSCRIPT) --last-failed
 
 test-coverage:  ## Run test coverage.
 	${MAKE} install
diff --git a/make.bat b/make.bat
index ae897aa5f..8e60811cc 100644
--- a/make.bat
+++ b/make.bat
@@ -28,7 +28,7 @@ if "%PYTHON%" == "" (
 )
 
 if "%TSCRIPT%" == "" (
-    set TSCRIPT=psutil\tests\__main__.py
+    set TSCRIPT=psutil\tests\runner.py
 )
 
 rem Needed to locate the .pypirc file and upload exes on PyPI.
diff --git a/psutil/tests/README.rst b/psutil/tests/README.rst
index b647d5138..9b870d5b1 100644
--- a/psutil/tests/README.rst
+++ b/psutil/tests/README.rst
@@ -4,13 +4,12 @@ Instructions for running tests
 * There are two ways of running tests. As a "user", if psutil is already
   installed and you just want to test it works::
 
-    python -m psutil.tests --install-deps  # install test deps
     python -m psutil.tests
 
   As a "developer", if you have a copy of the source code and you wish to hack
   on psutil::
 
-    make setup-dev-env  # install test deps (+ other things)
+    make setup-dev-env  # install missing third-party deps
     make test
 
 * To run tests on all supported Python versions install tox
diff --git a/psutil/tests/__main__.py b/psutil/tests/__main__.py
index 9dd0804cc..d5cd02eb1 100755
--- a/psutil/tests/__main__.py
+++ b/psutil/tests/__main__.py
@@ -6,89 +6,8 @@
 
 """
 Run unit tests. This is invoked by:
-
 $ python -m psutil.tests
 """
 
-import contextlib
-import optparse
-import os
-import sys
-import tempfile
-try:
-    from urllib.request import urlopen  # py3
-except ImportError:
-    from urllib2 import urlopen
-
-from psutil.tests import PYTHON_EXE
-from psutil.tests.runner import run
-
-
-HERE = os.path.abspath(os.path.dirname(__file__))
-GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
-TEST_DEPS = []
-if sys.version_info[:2] == (2, 6):
-    TEST_DEPS.extend(["ipaddress", "unittest2", "argparse", "mock==1.0.1"])
-elif sys.version_info[:2] == (2, 7) or sys.version_info[:2] <= (3, 2):
-    TEST_DEPS.extend(["ipaddress", "mock"])
-
-
-def install_pip():
-    try:
-        import pip  # NOQA
-    except ImportError:
-        import ssl
-        f = tempfile.NamedTemporaryFile(suffix='.py')
-        with contextlib.closing(f):
-            print("downloading %s to %s" % (GET_PIP_URL, f.name))
-            if hasattr(ssl, '_create_unverified_context'):
-                ctx = ssl._create_unverified_context()
-            else:
-                ctx = None
-            kwargs = dict(context=ctx) if ctx else {}
-            req = urlopen(GET_PIP_URL, **kwargs)
-            data = req.read()
-            f.write(data)
-            f.flush()
-
-            print("installing pip")
-            code = os.system('%s %s --user' % (PYTHON_EXE, f.name))
-            return code
-
-
-def install_test_deps(deps=None):
-    """Install test dependencies via pip."""
-    if deps is None:
-        deps = TEST_DEPS
-    deps = set(deps)
-    if deps:
-        is_venv = hasattr(sys, 'real_prefix')
-        opts = "--user" if not is_venv else ""
-        install_pip()
-        code = os.system('%s -m pip install %s --upgrade %s' % (
-            PYTHON_EXE, opts, " ".join(deps)))
-        return code
-
-
-def main():
-    usage = "%s -m psutil.tests [opts]" % PYTHON_EXE
-    parser = optparse.OptionParser(usage=usage, description="run unit tests")
-    parser.add_option("-i", "--install-deps",
-                      action="store_true", default=False,
-                      help="don't print status messages to stdout")
-
-    opts, args = parser.parse_args()
-    if opts.install_deps:
-        install_pip()
-        install_test_deps()
-    else:
-        for dep in TEST_DEPS:
-            try:
-                __import__(dep.split("==")[0])
-            except ImportError:
-                sys.exit("%r lib is not installed; run %s -m psutil.tests "
-                         "--install-deps" % (dep, PYTHON_EXE))
-        run()
-
-
+from .runner import main
 main()
diff --git a/psutil/tests/runner.py b/psutil/tests/runner.py
index 589117b80..2e9264bd4 100755
--- a/psutil/tests/runner.py
+++ b/psutil/tests/runner.py
@@ -12,6 +12,7 @@
 """
 
 from __future__ import print_function
+import optparse
 import os
 import sys
 import unittest
@@ -145,3 +146,17 @@ def run(name=None, last_failed=False):
         save_failed_tests(result)
         success = result.wasSuccessful()
         sys.exit(0 if success else 1)
+
+
+def main():
+    usage = "python3 -m psutil.tests [opts]"
+    parser = optparse.OptionParser(usage=usage, description="run unit tests")
+    parser.add_option("--last-failed",
+                      action="store_true", default=False,
+                      help="only run last failed tests")
+    opts, args = parser.parse_args()
+    run(last_failed=opts.last_failed)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/scripts/internal/winmake.py b/scripts/internal/winmake.py
index aba3595cf..f54211d93 100755
--- a/scripts/internal/winmake.py
+++ b/scripts/internal/winmake.py
@@ -31,7 +31,7 @@
     PYTHON = sys.executable
 else:
     PYTHON = os.getenv('PYTHON', sys.executable)
-TEST_SCRIPT = 'psutil\\tests\\__main__.py'
+TEST_SCRIPT = 'psutil\\tests\\runner.py'
 GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
 PY3 = sys.version_info[0] == 3
 HERE = os.path.abspath(os.path.dirname(__file__))
diff --git a/tox.ini b/tox.ini
index 2698eb6a8..b148642ba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ deps =
 setenv =
     TOX = 1
 
-commands = python psutil/tests/__main__.py
+commands = python psutil/tests/runner.py
 
 usedevelop = True