diff --git a/tests/requirements.txt b/tests/requirements.txt
index 3698099..c19edbe 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,13 +1,13 @@
 attrs==18.2.0
 black==18.9b0
 coverage==4.5.2
-flake8==3.6.0
+flake8==3.7.4
 isort==4.3.4
-mypy==0.650
-pycodestyle==2.4.0
-pyflakes==2.0.0
-pytest==4.0.2
-pytest-cov==2.6.0
+mypy==0.660
+pycodestyle==2.5.0
+pyflakes==2.1.0
+pytest==4.2.0
+pytest-cov==2.6.1
 pytest-isort==0.2.1
 pytest-mock==1.10.0
 pytest-sugar==0.9.2
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 36b8693..b7d1fac 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -32,10 +32,10 @@ def test_int_validation():
     assert exc_info.value.errors() == [
         {'loc': ('a',), 'msg': 'value is not a valid integer', 'type': 'type_error.integer'}
     ]
-    assert Model(a=3).a is 3
-    assert Model(a=True).a is 1
-    assert Model(a=False).a is 0
-    assert Model(a=4.5).a is 4
+    assert Model(a=3).a == 3
+    assert Model(a=True).a == 1
+    assert Model(a=False).a == 0
+    assert Model(a=4.5).a == 4
 
 
 def test_validate_whole():