diff --git a/pyramid/scaffolds/tests.py b/pyramid/scaffolds/tests.py
index 49358c1cf1..44680a4648 100644
--- a/pyramid/scaffolds/tests.py
+++ b/pyramid/scaffolds/tests.py
@@ -29,19 +29,18 @@ def install(self, tmpl_name):  # pragma: no cover
             self.make_venv(self.directory)
             here = os.path.abspath(os.path.dirname(__file__))
             os.chdir(os.path.dirname(os.path.dirname(here)))
-            subprocess.check_call(
-                [os.path.join(self.directory, 'bin', 'python'),
-                 'setup.py', 'develop'])
+            pip = os.path.join(self.directory, 'bin', 'pip')
+            subprocess.check_call([pip, 'install', '-e', '.'])
             os.chdir(self.directory)
             subprocess.check_call(['bin/pcreate', '-s', tmpl_name, 'Dingle'])
             os.chdir('Dingle')
-            py = os.path.join(self.directory, 'bin', 'python')
-            subprocess.check_call([py, 'setup.py', 'install'])
+            subprocess.check_call([pip, 'install', '.[testing]'])
             if tmpl_name == 'alchemy':
                 populate = os.path.join(self.directory, 'bin',
                                         'initialize_Dingle_db')
                 subprocess.check_call([populate, 'development.ini'])
-            subprocess.check_call([py, 'setup.py', 'test'])
+            subprocess.check_call([
+                os.path.join(self.directory, 'bin', 'py.test')])
             pserve = os.path.join(self.directory, 'bin', 'pserve')
             for ininame, hastoolbar in (('development.ini', True),
                                         ('production.ini', False)):
diff --git a/tox.ini b/tox.ini
index fc47faf17c..441b622234 100644
--- a/tox.ini
+++ b/tox.ini
@@ -39,6 +39,12 @@ commands =
     python pyramid/scaffolds/tests.py
 deps = virtualenv
 
+[testenv:py35-scaffolds]
+basepython = python3.5
+commands =
+    python pyramid/scaffolds/tests.py
+deps = virtualenv
+
 [testenv:pypy-scaffolds]
 basepython = pypy
 commands =