diff --git a/requirements.txt b/requirements.txt
index f782d71..140f98a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,7 @@
+# Requirements lower bounds listed here are our best effort to keep them up to
+# date but we do not test them so no guarantee of having them all correct. If
+# you find any incorrect lower bounds, let us know or propose a fix.
+
 pbr>=2.0.0 # Apache-2.0
 Jinja2>=2.10 # BSD License (3 clause)
 oslo.serialization>=2.18.0 # Apache-2.0