diff --git a/setup.py b/setup.py
index 85707d00..25075275 100644
--- a/setup.py
+++ b/setup.py
@@ -72,7 +72,7 @@ setup(name='mongoengine',
       long_description=LONG_DESCRIPTION,
       platforms=['any'],
       classifiers=CLASSIFIERS,
-      install_requires=['pymongo>=2.5'],
+      install_requires=['pymongo>=2.7'],
       test_suite='nose.collector',
       **extra_opts
 )
diff --git a/tests/document/instance.py b/tests/document/instance.py
index afb27e0d..6f04ac1d 100644
--- a/tests/document/instance.py
+++ b/tests/document/instance.py
@@ -57,7 +57,7 @@ class InstanceTest(unittest.TestCase):
             date = DateTimeField(default=datetime.now)
             meta = {
                 'max_documents': 10,
-                'max_size': 90000,
+                'max_size': 4096,
             }
 
         Log.drop_collection()
@@ -75,7 +75,7 @@ class InstanceTest(unittest.TestCase):
         options = Log.objects._collection.options()
         self.assertEqual(options['capped'], True)
         self.assertEqual(options['max'], 10)
-        self.assertEqual(options['size'], 90000)
+        self.assertTrue(options['size'] >= 4096)
 
         # Check that the document cannot be redefined with different options
         def recreate_log_document():
diff --git a/tests/queryset/queryset.py b/tests/queryset/queryset.py
index a2438e21..688b1bce 100644
--- a/tests/queryset/queryset.py
+++ b/tests/queryset/queryset.py
@@ -650,7 +650,7 @@ class QuerySetTest(unittest.TestCase):
                 blogs.append(Blog(title="post %s" % i, posts=[post1, post2]))
 
             Blog.objects.insert(blogs, load_bulk=False)
-            self.assertEqual(q, 1)  # 1 for the insert
+            self.assertEqual(q, 99)  # profiling logs each doc now :(
 
         Blog.drop_collection()
         Blog.ensure_indexes()
@@ -659,7 +659,7 @@ class QuerySetTest(unittest.TestCase):
             self.assertEqual(q, 0)
 
             Blog.objects.insert(blogs)
-            self.assertEqual(q, 2)  # 1 for insert, and 1 for in bulk fetch
+            self.assertEqual(q, 100)  # 99 or insert, and 1 for in bulk fetch
 
         Blog.drop_collection()
 
@@ -3943,7 +3943,7 @@ class QuerySetTest(unittest.TestCase):
             if qs:
                 pass
 
-            op = q.db.system.profile.find({"ns": 
+            op = q.db.system.profile.find({"ns":
                 {"$ne": "%s.system.indexes" % q.db.name}})[0]
 
             self.assertFalse('$orderby' in op['query'],
@@ -3969,7 +3969,7 @@ class QuerySetTest(unittest.TestCase):
             }
 
         Person.drop_collection()
-        
+
         Person(name="B").save()
         Person(name="C").save()
         Person(name="A").save()
@@ -3979,13 +3979,13 @@ class QuerySetTest(unittest.TestCase):
             if Person.objects:
                 pass
 
-            op = q.db.system.profile.find({"ns": 
+            op = q.db.system.profile.find({"ns":
                 {"$ne": "%s.system.indexes" % q.db.name}})[0]
 
             self.assertFalse('$orderby' in op['query'],
                 'BaseQuerySet must remove orderby from meta in boolen test')
 
-            self.assertEqual(Person.objects.first().name, 'A') 
+            self.assertEqual(Person.objects.first().name, 'A')
             self.assertTrue(Person.objects._has_data(),
                             'Cursor has data and returned False')