diff --git a/tox.ini b/tox.ini
index 43c98dd6a..238e2b673 100644
--- a/tox.ini
+++ b/tox.ini
@@ -72,6 +72,8 @@ commands =
 # B series are from bugbear
 # B001 Do not use bare `except:
 # B007 Loop control variable 'cpu' not used within the loop body.
+# B009 Do not call getattr with a constant attribute value
+# B010 Do not call setattr with a constant attribute value
 # B301 Python 3 does not include `.iter*` methods on dictionaries.
 # F series
 # F401 'module' imported but unused
@@ -79,7 +81,7 @@ ignore = E121,E123,E124,E125,E126,E127,E128,E265,E266,
          E302,E303,E305,E402,E501,E722,E741,
          H101,H102,H104,H201,H238,H237,H306,H401,H404,H405,
          W191,W291,W391,W503,
-         B001,B007,B301,
+         B001,B007,B009,B010,B301,
          F401
 
 [testenv:pep8]
@@ -88,7 +90,7 @@ usedevelop = False
 skip_install = True
 deps =
     hacking
-    flake8-bugbear
+    flake8-bugbear<=19.3.0
     flake8<3.6.0
 commands =
     flake8