diff --git a/tox.ini b/tox.ini
index 41288d74..bbf85cfb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ envlist = py{34,27,35},{debug,py,py34,py27,py35}-{mongodb,mysql,postgresql,elast
 [testenv]
 deps = .[mongo,mysql,postgresql,gnocchi]
        -r{toxinidir}/test-requirements.txt
+# NOTE(tonyb): This project has chosen to *NOT* consume upper-constraints.txt
 install_command = pip install -U {opts} {packages}
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}