diff --git a/scripts/upgrade b/scripts/upgrade
index eca0b6c..a5d050e 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -212,14 +212,8 @@ cp -f ../conf/prod.exs "$final_path/$app/config/prod.exs"
 # Give permission to the final_path
 chown -R "$app":"$app" "$final_path"
 pushd $final_path/$app
-    sudo -u "$app" MIX_ENV=prod mix local.hex --force
-    sudo -u "$app" MIX_ENV=prod mix local.rebar --force
     sudo -u "$app" mix deps.get
-    ynh_psql_execute_as_root \
-    "ALTER USER $app WITH SUPERUSER;"
     sudo -u "$app" MIX_ENV=prod mix ecto.migrate --force
-    ynh_psql_execute_as_root \
-    "ALTER USER $app WITH NOSUPERUSER;"
 popd
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.