diff --git a/VARIABLES.md b/VARIABLES.md
index d48a5d3..32176f9 100644
--- a/VARIABLES.md
+++ b/VARIABLES.md
@@ -82,4 +82,8 @@ services:
     db:
         image: postgres:9.6
         [...]
-```
\ No newline at end of file
+```
+
+## Apply the modifications
+
+After the modification of the `docker-compose.yml` file, you will need to run `docker-compose up -d` to apply the changes.