diff --git a/.appveyor.yml b/.appveyor.yml
index a7e40f560..c7e158742 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,49 +1,37 @@
 environment:
-  global:
-    # SDK v7.0 MSVC Express 2008's SetEnv.cmd script will fail if the
-    # /E:ON and /V:ON options are not enabled in the batch script intepreter
-    # See: http://stackoverflow.com/a/13751649/163740
-    CMD_IN_ENV: "cmd /E:ON /V:ON /C run_with_env.cmd"
-    # links to python-appveyor-demo's scripts by Olivier Grisel's (@ogrisel): 
-    RUN_WITH_ENV_CMD_URL: "https://raw.githubusercontent.com/ogrisel/python-appveyor-demo/master/appveyor/run_with_env.cmd"
-    INSTALL_PS1_URL: "https://raw.githubusercontent.com/ogrisel/python-appveyor-demo/master/appveyor/install.ps1"
-
   matrix:
     - PYTHON: "C:\\Python27"
       PYTHON_VERSION: "2.7.x"
       PYTHON_ARCH: "32"
+      TOXENV: "py27"
 
     - PYTHON: "C:\\Python34"
       PYTHON_VERSION: "3.4.x"
       PYTHON_ARCH: "32"
+      TOXENV: "py34"
 
     - PYTHON: "C:\\Python35"
-      PYTHON_VERSION: "3.5.0"
+      PYTHON_VERSION: "3.5.x"
       PYTHON_ARCH: "32"
+      TOXENV: "py35"
 
     - PYTHON: "C:\\Python27-x64"
       PYTHON_VERSION: "2.7.x"
       PYTHON_ARCH: "64"
+      TOXENV: "py27"
 
     - PYTHON: "C:\\Python34-x64"
       PYTHON_VERSION: "3.4.x"
       PYTHON_ARCH: "64"
+      TOXENV: "py34"
 
     - PYTHON: "C:\\Python35-x64"
-      PYTHON_VERSION: "3.5.0"
+      PYTHON_VERSION: "3.5.x"
       PYTHON_ARCH: "64"
+      TOXENV: "py35"
 
 install:
-  # download 'run_with_env.cmd' script that configures environment variables for the
-  # MSVC compiler and Windows SDK versions.
-  - "appveyor DownloadFile %RUN_WITH_ENV_CMD_URL%"
-
-  # download 'install.ps1' to install Python (official .msi of http://python.org) and 
-  # pip when not already installed
-  - "appveyor DownloadFile %INSTALL_PS1_URL%"
-  - ps: if (-not(Test-Path($env:PYTHON))) { & install.ps1 }
-
-  # Prepend newly installed Python to the PATH of this build
+  # Prepend Python to the PATH of this build
   - "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
 
   # check that we have the expected version and architecture for Python
@@ -53,23 +41,17 @@ install:
   # upgrade pip to avoid out-of-date warnings
   - "pip install --disable-pip-version-check --user --upgrade pip"
 
-  # Install the build dependencies of the project. If some dependencies contain
-  # compiled extensions and are not provided as pre-built wheel packages,
-  # pip will build them from source using the MSVC compiler matching the
-  # target Python version and architecture
-  - "%CMD_IN_ENV% pip install -vr requirements.txt"
+  # install the dependencies to run the tests
+  - "pip install -r dev-requirements.txt"
 
 build: false
 
 test_script:
-  - "SET PATH=C:\\msys64\\usr\\bin;%PATH%"
-  # 'run-test.sh' interprets $PYTHON as the executable name
-  - "SET PYTHON=python"
-  - "bash run-tests.sh"
+  - "tox"
 
 after_test:
   # if tests are successful, create packages for the project
-  - "%CMD_IN_ENV% python setup.py sdist --formats=zip"
+  - python setup.py sdist --formats=zip"
 
 artifacts:
   # archive the generated packages in the ci.appveyor.com build report
diff --git a/.travis/install.sh b/.travis/install.sh
index ec511296c..0c2a1104e 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -51,4 +51,4 @@ fi
 
 python -m virtualenv ~/.venv
 source ~/.venv/bin/activate
-pip install tox
+pip install -r dev-requirements.txt
diff --git a/Lib/fontTools/misc/loggingTools.py b/Lib/fontTools/misc/loggingTools.py
index f2a302ea7..7295c5520 100644
--- a/Lib/fontTools/misc/loggingTools.py
+++ b/Lib/fontTools/misc/loggingTools.py
@@ -229,19 +229,19 @@ class Timer(object):
 	>>> timer = Timer()
 	>>> time.sleep(0.01)
 	>>> print("First lap:", timer.split())
-	First lap: 0.0...
+	First lap: ...
 	>>> time.sleep(0.02)
 	>>> print("Second lap:", timer.split())
-	Second lap: 0.0...
+	Second lap: ...
 	>>> print("Overall time:", timer.time())
-	Overall time: 0.0...
+	Overall time: ...
 
 	Can be used as a context manager inside with-statements.
 
 	>>> with Timer() as t:
 	...     time.sleep(0.01)
 	>>> print("%0.3f seconds" % t.elapsed)
-	0.0... seconds
+	0... seconds
 
 	If initialised with a logger, it can log the elapsed time automatically
 	upon exiting the with-statement.
@@ -259,7 +259,7 @@ class Timer(object):
 	>>> timer = Timer(log)
 	>>> with timer():
 	...     time.sleep(0.01)
-	elapsed time: 0.01...s
+	elapsed time: ...s
 	>>> with timer('redo it', level=logging.INFO):
 	...     time.sleep(0.02)
 	Took ... to redo it
@@ -274,7 +274,7 @@ class Timer(object):
 	... def test2():
 	...    time.sleep(0.02)
 	>>> test1()
-	Took 0.01... to run 'test1'
+	Took ... to run 'test1'
 	>>> test2()
 	Took ... to run test 2
 	"""
diff --git a/Lib/fontTools/misc/py23_test.py b/Lib/fontTools/misc/py23_test.py
index 867945f01..b535e7373 100644
--- a/Lib/fontTools/misc/py23_test.py
+++ b/Lib/fontTools/misc/py23_test.py
@@ -36,8 +36,11 @@ class OpenFuncWrapperTest(unittest.TestCase):
 		try:
 			with open(datafile, 'rb') as infile, \
 					tempfile.NamedTemporaryFile(delete=False) as outfile:
+				env = dict(os.environ)
+				env["PYTHONPATH"] = os.pathsep.join(sys.path)
 				check_call(
-					[sys.executable, script], stdin=infile, stdout=outfile)
+					[sys.executable, script], stdin=infile, stdout=outfile,
+					env=env)
 			result = not filecmp.cmp(infile.name, outfile.name, shallow=False)
 		finally:
 			os.remove(script)
diff --git a/Lib/fontTools/ttLib/woff2_test.py b/Lib/fontTools/ttLib/woff2_test.py
index ca4282bf6..8996ed8f0 100644
--- a/Lib/fontTools/ttLib/woff2_test.py
+++ b/Lib/fontTools/ttLib/woff2_test.py
@@ -7,7 +7,7 @@ from .woff2 import (WOFF2Reader, woff2DirectorySize, woff2DirectoryFormat,
 	WOFF2FlavorData, woff2TransformedTableTags, WOFF2GlyfTable, WOFF2LocaTable,
 	WOFF2Writer)
 import unittest
-import sstruct
+from fontTools.misc import sstruct
 import os
 import random
 import copy
diff --git a/dev-requirements.txt b/dev-requirements.txt
new file mode 100644
index 000000000..18e00b343
--- /dev/null
+++ b/dev-requirements.txt
@@ -0,0 +1,2 @@
+pytest>=2.8
+tox>=2.3
diff --git a/requirements.txt b/requirements.txt
index 2d7a35b5a..c0d1e9138 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-git+https://github.com/google/brotli@66db08156eba94f1fb0f77b6af519e4adedea8bf#egg=Brotli
\ No newline at end of file
+git+https://github.com/google/brotli@v0.3.0#egg=Brotli
\ No newline at end of file
diff --git a/run-tests.sh b/run-tests.sh
index e97e9c3f5..662d19aef 100755
--- a/run-tests.sh
+++ b/run-tests.sh
@@ -12,46 +12,17 @@ elif test "x$1" = x-2; then
 	shift
 fi
 test "x$PYTHON" = x && PYTHON=python
-echo "$(which $PYTHON) --version"
-$PYTHON --version 2>&1
-echo
-
-# Setup environment
-DIR=`dirname "$0"`
-cd "$DIR/Lib"
-if [ "x$PYTHONPATH" != "x" ]; then
-	PYTHONPATH=".:$PYTHONPATH"
-else
-	PYTHONPATH="."
-fi
-export PYTHONPATH
 
 # Find tests
-FILTER=
+FILTERS=
 for arg in "$@"; do
-	test "x$FILTER" != x && FILTER="$FILTER|"
-	FILTER="$FILTER$arg"
+	test "x$FILTERS" != x && FILTERS="$FILTERS or "
+	FILTERS="$FILTERS$arg"
 done
 
-test "x$FILTER" = "x" && FILTER=.
-TESTS=`grep -r --include='*.py' -l -e doctest -e unittest * | grep -E "$FILTER"`
-
-ret=0
-FAILS=
-for test in $TESTS; do
-	echo "Running tests in $test"
-	test=`echo "$test" | sed 's@[/\\]@.@g;s@[.]py$@@'`
-	if ! $PYTHON -m $test -v; then
-		ret=$((ret+1))
-		FAILS="$FAILS
-$test"
-	fi
-done
-	echo
-	echo "SUMMARY:"
-if test $ret = 0; then
-	echo "All tests passed."
+# Run tests
+if [ -z "$FILTERS" ]; then
+	$PYTHON -m pytest
 else
-	echo "$ret source file(s) had tests failing:$FAILS" >&2
+	$PYTHON -m pytest -k "$FILTERS"
 fi
-exit $ret
diff --git a/tox.ini b/tox.ini
index f977b8e2b..a4d0dd64e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,8 +9,11 @@ commands =
     py.test
 
 [pytest]
+minversion = 2.8
 testpaths =
     Lib/fontTools
+python_files =
+    *_test.py
 addopts =
     # run py.test in verbose mode
     -v