diff --git a/requirements.txt b/requirements.txt
index 083ceb02..2e3b9c5d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,15 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
+# All additions to this file must have significant justification.
+
+# NOTE(morgan) At no time may any olso library be added to the keystoneauth
+# requirements. The requirements for keystoneauth are very tightly controlled
+# to ensure we are not pulling in a ton of transient dependencies. This is
+# important from the standpoint of ensuring keystoneauth can be used outside
+# of openstack-specific projects (allowing interaction with openstack APIs)
+# where oslo and associated transient dependencies are not desired.
+
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 positional>=1.1.1 # Apache-2.0