diff --git a/.yamllint b/.yamllint
index a4d53d6..2ceb272 100644
--- a/.yamllint
+++ b/.yamllint
@@ -1,5 +1,8 @@
 extends: default
 
+ignore: |
+  .tox
+
 rules:
   braces:
     max-spaces-inside: 1
diff --git a/bindep.txt b/bindep.txt
index ccee5a8..732c4c6 100644
--- a/bindep.txt
+++ b/bindep.txt
@@ -2,6 +2,6 @@
 # see http://docs.openstack.org/infra/bindep/ for additional information.
 
 gcc-c++ [test platform:rpm]
-python3-devel [test platform:rpm]
-python3 [test platform:rpm]
-python36 [test !platform:fedora-28]
+python3-devel [test !platform:centos-7 platform:rpm]
+python3 [test !platform:centos-7 platform:rpm]
+python36 [test !platform:centos-7 !platform:fedora-28]
diff --git a/test-requirements.txt b/test-requirements.txt
index 049cd01..611bc25 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,2 +1,3 @@
+ara
 flake8
 yamllint