diff --git a/README.md b/README.md
index ad2f212..25b4ccd 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,15 @@
 
 A suite of deployment scripts for the many components (message broker, DBs, prometheus, alertmanager, etc..) that make up the ProSanteConnect ecosystem
 
+## Test in dev instances
+
+To avoid confusion, waypoint projects should be left to point to their environement branch.
+However, to test a specific version in the dev instance, 
+another reference may be deployed by adding `-remote-source=ref=<gitref>`
+to the `waypoint up` command. For example, to test main in developement :
+
+`waypoint up -local=false -remote-source=ref=main`
+
 ## Distribution history
 
 This ecosystem uses many independant components, some of which live an independant life in distinct repositories.