diff --git a/Usage.md b/Usage.md
index 649e4a7..41efbdc 100644
--- a/Usage.md
+++ b/Usage.md
@@ -34,7 +34,9 @@ put your scripts `data/config/auto/scripts` and restart the container
 
 ### Extensions
 
-put your extensions in `data/config/auto/extensions`, there is also the option to create a script `data/config/auto/startup.sh` which will be called on container startup, in case you want to install any additional dependencies for your extensions or anything else.
+First, you have to add `--enable-insecure-extension-access` to your `CLI_ARGS`.
+
+Then, put your extensions in `data/config/auto/extensions`, there is also the option to create a script `data/config/auto/startup.sh` which will be called on container startup, in case you want to install any additional dependencies for your extensions or anything else.
 
 An example of your `startup.sh` might looks like this:
 ```sh