diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..417be10
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,8 @@
+[run]
+branch = True
+source = $COVERAGE_HOME/src/plone/recipe/zeoserver
+parallel = true
+data_file = $COVERAGE_HOME/.coverage
+
+[report]
+precision = 2
diff --git a/.gitignore b/.gitignore
index de13ba3..66ec592 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,11 @@
-.installed.cfg
 *.pyc
+.coverage
+.coverage.*
+.installed.cfg
+.tox/
 bin/
 develop-eggs/
+htmlcov/
 include/
 lib/
 parts/
diff --git a/.travis.yml b/.travis.yml
index 33c1e93..8f3e11a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,17 +1,22 @@
 language: python
-sudo: false
+dist: xenial
 python:
     - 2.7
-    - 3.5
     - 3.6
+    - 3.7
+before_install:
+    - pip install -U setuptools pip
+    - pip install -U coverage coveralls zope.testrunner
 install:
-    - python bootstrap.py
-    - bin/buildout
+    - pip install -U -e .[zrs]
 script:
-    - bin/test -v1
+    - export COVERAGE_HOME=$(pwd)
+    - export COVERAGE_PROCESS_START=$COVERAGE_HOME/.coveragerc
+    - coverage run -m zope.testrunner --test-path=src --all -v1
 notifications:
     email: false
+after_success:
+    - coverage combine
+    - coveralls
 cache:
   pip: true
-  directories:
-    - eggs/
diff --git a/CHANGES.rst b/CHANGES.rst
index e732116..b6091e8 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,16 +1,16 @@
 Changelog
 =========
 
-1.4.3 (unreleased)
-------------------
+2.0 (unreleased)
+----------------
 
 Breaking changes:
 
-- *add item here*
+- Drop support for ``ZODB3`` but require ``ZODB >= 5``.
 
 New features:
 
-- *add item here*
+- Add support for Python 3.6 and 3.7.
 
 Bug fixes:
 
diff --git a/MANIFEST.in b/MANIFEST.in
index fc44ccb..869f7ea 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,8 @@
-include *
+  include *.rst
 
-recursive-include src *
+  include tox.ini
+  exclude tox.ini
 
-global-exclude *pyc
+  recursive-include src *.bat
+  recursive-include src *.in
+  recursive-include src *.txt
diff --git a/README.rst b/README.rst
index 9b57c57..32847ec 100644
--- a/README.rst
+++ b/README.rst
@@ -196,7 +196,7 @@ zeo-conf
 repozo
   The path to the repozo.py backup script. A wrapper for this will be
   generated in bin/repozo, which sets up the appropriate environment for
-  running this. Defaults to using the repozo script from the ZODB3 egg.
+  running this. Defaults to using the repozo script from the ZODB egg.
   Set this to an empty value if you do not want this script to be generated.
 
 repozo-script-name
@@ -209,7 +209,7 @@ zeopack
   The path to the zeopack.py backup script. A wrapper for this will be
   generated in bin/zeopack (unless you change `zeopack-script-name`), which
   sets up the appropriate environment to run this. Defaults to using the zeopack
-  script from the ZODB3 egg.  Set this option to an empty value if you do not
+  script from the ZODB egg.  Set this option to an empty value if you do not
   want this script to be generated.
 
 zeopack-script-name
diff --git a/setup.py b/setup.py
index fa7d427..aa662c9 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 import sys
 
 
-version = '1.4.3.dev0'
+version = '2.0.dev0'
 
 additional_install_requires = []
 
@@ -34,9 +34,16 @@
         'Framework :: Plone',
         'Framework :: Plone :: 5.1',
         'Framework :: Plone :: 5.2',
-        'Framework :: Zope2',
+        'Framework :: Zope',
+        'Framework :: Zope :: 4',
         'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: Implementation',
+        'Programming Language :: Python :: Implementation :: CPython',
     ],
     packages=find_packages('src'),
     include_package_data=True,
@@ -46,8 +53,8 @@
         'setuptools',
         'zc.buildout',
         'zc.recipe.egg',
-        'ZODB3 >= 3.8',
-        'zope.mkzeoinstance >=4',
+        'ZODB >= 5',
+        'zope.mkzeoinstance >=4.1',
         'ZopeUndo',
     ] + additional_install_requires,
     extras_require={
diff --git a/src/plone/recipe/zeoserver/recipe.py b/src/plone/recipe/zeoserver/recipe.py
index f8e4481..0a24b2e 100644
--- a/src/plone/recipe/zeoserver/recipe.py
+++ b/src/plone/recipe/zeoserver/recipe.py
@@ -1,7 +1,4 @@
 # -*- coding: utf-8 -*-
-from pkg_resources import get_distribution
-from pkg_resources import parse_version
-
 import logging
 import os
 import shutil
@@ -506,11 +503,8 @@ def _write_file(self, path, content):
 
 
 # the template used to build a blob storage
-zodb_version = get_distribution('ZODB3').version
 
-if parse_version(zodb_version) >= parse_version('3.9'):
-    # ZODB 3.9+ supports blobs natively
-    blob_storage_template = """
+blob_storage_template = """
 <filestorage %(storage_number)s>
   path %(file_storage)s
   blob-dir %(blob_storage)s
@@ -519,20 +513,6 @@ def _write_file(self, path, content):
 </filestorage>
 """.strip()
 
-else:
-    # ZODB 3.8 needs a blob storage wrapper
-    blob_storage_template = """
-<blobstorage %(storage_number)s>
-  blob-dir %(blob_storage)s
-  <filestorage %(storage_number)s>
-    path %(file_storage)s
-    %(pack_gc)s
-    %(pack_keep_old)s
-  </filestorage>
-</blobstorage>
-""".strip()
-
-
 zrs_template = """
 %%import zc.zrs
 
diff --git a/src/plone/recipe/zeoserver/tests/test_docs.py b/src/plone/recipe/zeoserver/tests/test_docs.py
index 998c622..84dba40 100644
--- a/src/plone/recipe/zeoserver/tests/test_docs.py
+++ b/src/plone/recipe/zeoserver/tests/test_docs.py
@@ -28,7 +28,8 @@ def setUp(test):
     install('Twisted', test)
     install('hyperlink', test)
     install('idna', test)
-    dependencies = pkg_resources.working_set.require('ZODB3')
+    install('PyHamcrest', test)
+    dependencies = pkg_resources.working_set.require('ZODB')
     for dep in dependencies:
         try:
             install(dep.project_name, test)
diff --git a/src/plone/recipe/zeoserver/tests/zeoserver.txt b/src/plone/recipe/zeoserver/tests/zeoserver.txt
index d53dc00..080a4a8 100644
--- a/src/plone/recipe/zeoserver/tests/zeoserver.txt
+++ b/src/plone/recipe/zeoserver/tests/zeoserver.txt
@@ -37,7 +37,8 @@ Let's run it::
 We should have a basic zeo.conf::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> conf = open(os.path.join(zeo, 'etc', 'zeo.conf')).read()
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     conf = f.read()
     >>> print(conf.replace('\\', '/'))
     %define INSTANCE .../sample-buildout/parts/zeo
     <BLANKLINE>
@@ -105,7 +106,8 @@ Now, let's create a simple buildout to create a primary replication::
 We should have primary zrs config in zeo.conf::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> print(open(os.path.join(zeo, 'etc', 'zeo.conf')).read())
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     print(f.read())
     %define INSTANCE ...
     ...
     %import zc.zrs
@@ -138,7 +140,8 @@ And for a secondary::
 We should have primary zrs config in zeo.conf::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> print(open(os.path.join(zeo, 'etc', 'zeo.conf')).read())
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     print(f.read())
     %define INSTANCE ...
     ...
     %import zc.zrs
@@ -186,7 +189,8 @@ Let's run it::
 We should have a zeo.conf with a rotatezlog::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> print(open(os.path.join(zeo, 'etc', 'zeo.conf')).read())
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     print(f.read())
      %define INSTANCE ...
     ...
     <eventlog>
@@ -230,7 +234,8 @@ Let's run it::
 We should have a zeo.conf with a log level set to `error`::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> print(open(os.path.join(zeo, 'etc', 'zeo.conf')).read())
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     print(f.read())
      %define INSTANCE ...
     ...
     <eventlog>
@@ -266,7 +271,8 @@ Let's run it::
 We should have a zeo.conf with log file rotation enabled::
 
     >>> zeo = os.path.join(sample_buildout, 'parts', 'zeo')
-    >>> print(open(os.path.join(zeo, 'etc', 'zeo.conf')).read())
+    >>> with open(os.path.join(zeo, 'etc', 'zeo.conf')) as f:
+    ...     print(f.read())
     %define INSTANCE ...
     ...
     <eventlog>
@@ -313,7 +319,8 @@ Now check the values for `host`, `port` and `unix`::
     >>> zeopack_path = os.path.join(sample_buildout, 'bin', 'zeopack')
     >>> if WINDOWS:
     ...     zeopack_path += '-script.py'
-    >>> zeopack = open(zeopack_path, 'r').read()
+    >>> with open(zeopack_path, 'r') as f:
+    ...     zeopack = f.read()
     >>> 'host = "127.0.0.1"' in zeopack
     True
     >>> 'port = "8001"' in zeopack
@@ -344,7 +351,8 @@ Now check the values for `host`, `port` and `unix`::
     >>> zeopack_path = os.path.join(sample_buildout, 'bin', 'zeopack')
     >>> if WINDOWS:
     ...     zeopack_path += '-script.py'
-    >>> zeopack = open(zeopack_path, 'r').read()
+    >>> with open(zeopack_path, 'r') as f:
+    ...     zeopack = f.read()
     >>> 'host = "192.168.0.11"' in zeopack
     True
     >>> 'port = "8001"' in zeopack
@@ -375,7 +383,8 @@ Now check the values for `storage`::
     >>> zeopack_path = os.path.join(sample_buildout, 'bin', 'zeopack')
     >>> if WINDOWS:
     ...     zeopack_path += '-script.py'
-    >>> zeopack = open(zeopack_path, 'r').read()
+    >>> with open(zeopack_path, 'r') as f:
+    ...     zeopack = f.read()
     >>> 'storage = "9"' in zeopack
     True
 
@@ -403,7 +412,8 @@ Now check the values for `host`, `port` and `unix`::
     >>> zeopack_path = os.path.join(sample_buildout, 'bin', 'zeopack')
     >>> if WINDOWS:
     ...     zeopack_path += '-script.py'
-    >>> zeopack = open(zeopack_path, 'r').read()
+    >>> with open(zeopack_path, 'r') as f:
+    ...     zeopack = f.read()
     >>> 'host = None' in zeopack
     True
     >>> 'port = None' in zeopack
@@ -465,15 +475,17 @@ be different and correspond as the buildout specified::
     >>> zeopack_paths = [os.path.join(sample_buildout, 'bin', script) for script in zeopack_scripts]
     >>> if WINDOWS:
     ...     zeopack_paths =  [zeopack + '-script.py' for zeopack in zeopacks]
-    >>> zeopacks = [open(zeopack_path, 'r').read() for zeopack_path in zeopack_paths]
-
-    >>> 'username = "firstuser"' in zeopacks[0]
+    >>> with open(zeopack_paths[0], 'r') as f:
+    ...     first_zeopack = f.read()
+    >>> with open(zeopack_paths[1], 'r') as f:
+    ...     second_zeopack = f.read()
+    >>> 'username = "firstuser"' in first_zeopack
     True
-    >>> 'username = "seconduser"' in zeopacks[0]
+    >>> 'username = "seconduser"' in first_zeopack
     False
-    >>> 'username = "firstuser"' in zeopacks[1]
+    >>> 'username = "firstuser"' in second_zeopack
     False
-    >>> 'username = "seconduser"' in zeopacks[1]
+    >>> 'username = "seconduser"' in second_zeopack
     True
 
 Restore the original simple configuration::
@@ -532,7 +544,8 @@ Our generated script now has a reference to the relative path.
     >>> zeo_path = join('bin', 'zeo')
     >>> if WINDOWS:
     ...     zeo_path += '-script.py'
-    >>> open(zeo_path).read()
+    >>> with open(zeo_path) as f:
+    ...     f.read()
     '...base = os.path.dirname(os.path.abspath(os.path.realpath(__file__)))...'
 
 Extra paths in scripts
@@ -569,17 +582,20 @@ The generated scripts should have the extra path.
 
     >>> parts_bin = join('parts', 'zeo', 'bin')
 
-    >>> extra in open(join('bin', 'zeo' + suffix)).read()
+    >>> with open(join('bin', 'zeo' + suffix)) as f:
+    ...     extra in f.read()
     True
 
     >>> if not WINDOWS:
-    ...     extra in open(join(parts_bin, 'runzeo' + suffix)).read()
+    ...     with open(join(parts_bin, 'runzeo' + suffix)) as f:
+    ...         extra in f.read()
     ... else:
     ...     print(True)
     True
 
     >>> if not WINDOWS:
-    ...     extra in open(join(parts_bin, 'zeoctl' + suffix)).read()
+    ...     with open(join(parts_bin, 'zeoctl' + suffix)) as f:
+    ...         extra in f.read()
     ... else:
     ...     print(True)
     True
@@ -613,5 +629,6 @@ The main script should have the initialization.
     ... else:
     ...     suffix = ''
 
-    >>> 'foo = 1' in open(join('bin', 'zeo' + suffix)).read()
+    >>> with open(join('bin', 'zeo' + suffix)) as f:
+    ...     'foo = 1' in f.read()
     True
diff --git a/tox.ini b/tox.ini
index 74aa833..ecdf9bd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,38 +2,36 @@
 envlist =
     flake8,
     py27,
-    py35,
     py36,
+    py37,
     coverage,
 
 skip_missing_interpreters = False
 
 [testenv]
+usedevelop = true
 commands =
-    {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} bootstrap
-    {envbindir}/buildout -c {toxinidir}/buildout.cfg buildout:directory={envdir} buildout:develop={toxinidir} -n install test
-    coverage run {envbindir}/test --all {posargs:-vc}
-skip_install = true
+    zope-testrunner --test-path=src --all {posargs:-vc}
+extras = zrs
 deps =
-    setuptools==33.1.1
-    zc.buildout
-    coverage
-setenv =
-    COVERAGE_FILE=.coverage.{envname}
+    zope.testrunner
 
 [testenv:coverage]
-basepython = python2.7
-deps = coverage
+basepython = python3.6
+deps =
+    zope.testrunner
+    coverage
 setenv =
-    COVERAGE_FILE=.coverage
+    COVERAGE_HOME={toxinidir}
+    COVERAGE_PROCESS_START={toxinidir}/.coveragerc
 commands =
-    coverage erase
+    coverage run -m zope.testrunner --test-path=src {posargs:-vc}
     coverage combine
     coverage html
-    coverage xml
-    coverage report
+    coverage report --fail-under=62
 
 [testenv:flake8]
-basepython = python2.7
+basepython = python3.6
+skip_install = true
 deps = flake8
 commands = flake8 --doctests src setup.py