Properly declare dependency on zope.schema >= 4.2.0

This was introduced in zope.security 4.2.1.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 335b064..1a3fb1d 100644
--- a/setup.py
+++ b/setup.py
@@ -180,7 +180,7 @@ setup(name='zope.security',
           'zope.interface',
           'zope.location',
           'zope.proxy >= 4.3.0',
-          'zope.schema',
+          'zope.schema >= 4.2.0',
       ],
       tests_require=TESTS_REQUIRE,
       extras_require={