diff --git a/.travis.yml b/.travis.yml
index 38a5a1f..7938527 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,13 @@ python:
   - 3.4
   - 3.5
   - 3.6
-  - pypy-5.4.1
+  - pypy
+  - pypy3
+matrix:
+    include:
+        - python: "3.7"
+          dist: xenial
+          sudo: true
 script:
   - coverage run -m zope.testrunner --test-path=src  --auto-color --auto-progress
 
diff --git a/CHANGES.rst b/CHANGES.rst
index 4945352..5e68a29 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,15 +1,17 @@
-=======
-CHANGES
-=======
+=========
+ CHANGES
+=========
 
-2.1.1 (unreleased)
-------------------
+2.2.0 (unreleased)
+==================
 
-- Nothing changed yet.
+- Add support for Python 3.7.
+
+- Drop support for Python 3.3.
 
 
 2.1.0 (2017-05-03)
-------------------
+==================
 
 - Add support for Python 3.4, 3.5, 3.6 and PyPy.
 
@@ -18,7 +20,7 @@ CHANGES
 
 
 2.0.0 (2012-11-17)
-------------------
+==================
 
 - zope.configuration changed action tuples to action dicts. This version works
   with the new action dict given from zope.configuration since version 3.8.0.
@@ -27,7 +29,7 @@ CHANGES
 
 
 1.3.0 (2010-10-28)
-------------------
+==================
 
 - Fundamental change in the way how baseregistry hooks into ZCA.
   Now it uses hooks.setSite, which requires that zope.component hooks
@@ -38,13 +40,13 @@ CHANGES
 
 
 1.2.0 (2009-12-27)
-------------------
+==================
 
 - Moved browser dependencies to zmi extras
 
 
 1.1.0 (2009-03-19)
-------------------
+==================
 
 - Fix base registry management form failure in case, when a site has its
   parent's local site manager (that isn't registered as utility) in its
@@ -56,6 +58,6 @@ CHANGES
 
 
 1.0.0 (2008-01-24)
-------------------
+==================
 
 - Initial Release
diff --git a/setup.py b/setup.py
index 1c30982..077adea 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,7 @@ def read(*rnames):
     'webtest',
 ]
 
-setup (
+setup(
     name="z3c.baseregistry",
     version='2.1.1.dev0',
     author="Stephan Richter, Roger Ineichen and the Zope Community",
@@ -76,10 +76,10 @@ def read(*rnames):
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Natural Language :: English',
@@ -87,7 +87,7 @@ def read(*rnames):
         'Topic :: Internet :: WWW/HTTP',
         'Framework :: Zope :: 3'
     ],
-    url='http://github.com/zopefoundation/z3c.baseregistry',
+    url='https://github.com/zopefoundation/z3c.baseregistry',
     packages=find_packages('src'),
     include_package_data=True,
     package_dir={'': 'src'},
@@ -101,11 +101,11 @@ def read(*rnames):
     tests_require=tests_require,
     install_requires=[
         'setuptools',
-        'zope.component[hook,zcml] >= 4.3.0',
-        'zope.configuration >= 4.1.0',
+        'zope.component[hook,zcml] >= 4.5.0',
+        'zope.configuration >= 4.3.0',
         'zope.i18nmessageid >= 2.2',
         'zope.interface',
-        'zope.schema',
+        'zope.schema >= 4.9.0',
         'zope.site',
     ],
     zip_safe=False,
diff --git a/src/z3c/baseregistry/README.rst b/src/z3c/baseregistry/README.rst
index 61d60ba..5a00dd5 100644
--- a/src/z3c/baseregistry/README.rst
+++ b/src/z3c/baseregistry/README.rst
@@ -117,7 +117,7 @@ However, when reading the jar, we get an error:
 This is because we have not registered the registry in its parent as an
 ``IComponents`` utility, yet:
 
-  >>> from zope.component.interfaces import IComponents
+  >>> from zope.interface.interfaces import IComponents
   >>> zope.component.provideUtility(myRegistry, IComponents, 'myRegistry')
 
   >>> pickle.loads(jar)
@@ -172,7 +172,7 @@ we can register the registry:
   ...
   ...   <utility
   ...       component="README.custom"
-  ...       provides="zope.component.interfaces.IComponents"
+  ...       provides="zope.interface.interfaces.IComponents"
   ...       name="custom" />
   ...
   ... </configure>
@@ -549,8 +549,8 @@ benefit.
   ... ''', context=context)
   ... except Exception as e:
   ...     print(e)
-  File...
-      ConfigurationError: Nested ``registerIn`` directives are not permitted.
+  Nested ``registerIn`` directives are not permitted.
+      File...
 
 Cleanup
 ~~~~~~~
diff --git a/src/z3c/baseregistry/baseregistry.py b/src/z3c/baseregistry/baseregistry.py
index 3393951..ad1147e 100644
--- a/src/z3c/baseregistry/baseregistry.py
+++ b/src/z3c/baseregistry/baseregistry.py
@@ -15,10 +15,11 @@
 
 """
 __docformat__ = "reStructuredText"
-from zope.component import globalregistry, interfaces
+from zope.component import globalregistry
+from zope.interface.interfaces import IComponents
 
 def BC(components, name):
-    return components.getUtility(interfaces.IComponents, name)
+    return components.getUtility(IComponents, name)
 
 class BaseComponents(globalregistry.BaseGlobalComponents):
     """An ``IComponents`` implementation that serves as base for other
diff --git a/tox.ini b/tox.ini
index 89b6219..b584544 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,19 @@
 [tox]
 envlist =
-    py27, pypy, py34, py35, py36
+    py27, pypy, py34, py35, py36, py37, coverage
 
 [testenv]
 commands =
     zope-testrunner --test-path=src []
+extras = test
+
+
+[testenv:coverage]
+usedevelop = true
+basepython =
+    python3.6
+commands =
+    coverage run -m zope.testrunner --test-path=src
+    coverage report --fail-under=100
 deps =
-    .[test]
+    coverage