diff --git a/examples/connext_dds/custom_transport/README.md b/examples/connext_dds/custom_transport/README.md
index 16dcfbe10..23a483af6 100644
--- a/examples/connext_dds/custom_transport/README.md
+++ b/examples/connext_dds/custom_transport/README.md
@@ -1,5 +1,9 @@
 # Example Code: Creating a Custom Transport
 
+**IMPORTANT:** This documentation is out of date, and details may be missing.
+If you are interested in developing a custom transport plugin for RTI Connext,
+please contact your local RTI representative or email sales@rti.com.
+
 ## Concept
 
 RTI Connext DDS interacts with the underlying network/communications transport