diff --git a/setup.cfg b/setup.cfg
index c5032b3d6..50489de2b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,12 +21,14 @@ exclude = .venv,.hypothesis,.git,__pycache__,resources.py
 # P101: format string does contain unindexed parameters
 # P102: docstring does contain unindexed parameters
 # P103: other string does contain unindexed parameters
+# D001: found assert_ replace it with assertTrue
 ignore =
     E128,E226,E265,E501,E402,E266,
     F401,
     N802,
     L101,L102,L103,L201,L202,L203,L204,L207,
-    P101,P102,P103
+    P101,P102,P103,
+    D001
 max-complexity = 12
 putty-ignore =
     /# pylint: disable=invalid-name/ : +N801,N806
diff --git a/tox.ini b/tox.ini
index 304b735b7..9add57684 100644
--- a/tox.ini
+++ b/tox.ini
@@ -162,6 +162,7 @@ deps =
     pep8==1.7.0
     pyflakes==1.0.0
     flake8-string-format==0.2.1
+    flake8-deprecated==0.2
 commands =
     {envpython} -m flake8