diff --git a/tox.ini b/tox.ini
index 5d4c0950..f6220e44 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,6 @@ install_command = pip install {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_NOCAPTURE=False
          OS_STDERR_NOCAPTURE=False
-         PYTHONHASHSEED=0
 
 deps =
        -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}