diff --git a/.env.sample b/.env.sample
index fe855a8..1cbd9e3 100644
--- a/.env.sample
+++ b/.env.sample
@@ -72,4 +72,5 @@ ACME_AGREE=true
 SHOW_DEBUG_IN_DEV=true
 MIX_ENV=prod
 LETS_ENCRYPT_ENV=production
-HOSTNAME=$DOMAIN
\ No newline at end of file
+HOSTNAME=$DOMAIN
+APP_ENTRYPOINT_VERSION=v1
\ No newline at end of file