diff --git a/scripts/restore b/scripts/restore
index ea14736..ff26e10 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -88,6 +88,9 @@ ynh_script_progression --message="Reinstalling dependencies..." --weight=5
 
 # Define and install dependencies
 
+# Add buster-backports gpg key
+ynh_install_repo_gpg --key="https://ftp-master.debian.org/keys/archive-key-10.asc" --name="$app"
+
 #Add buster-backports repo
 ynh_add_repo --uri="http://deb.debian.org/debian" --suite="buster-backports" --component="main" --name="$app"