diff --git a/scripts/_common.sh b/scripts/_common.sh
index 9057eda..c3ac172 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -15,7 +15,7 @@ pkg_dependencies="ufraw-batch ffmpeg"  #redis-server redis-tools
 # EXPERIMENTAL HELPERS
 #=================================================
 
-readonly YNH_DEFAULT_COMPOSER_VERSION=2.0.8  #1.10.17
+readonly YNH_DEFAULT_COMPOSER_VERSION=1.10.17  #1.10.17
 # Declare the actual composer version to use.
 # A packager willing to use another version of composer can override the variable into its _common.sh.
 YNH_COMPOSER_VERSION=${YNH_COMPOSER_VERSION:-$YNH_DEFAULT_COMPOSER_VERSION}
diff --git a/scripts/upgrade b/scripts/upgrade
index 375fd92..b42921a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -127,15 +127,14 @@ ynh_add_fpm_config --package="$extra_php_dependencies"
 ynh_script_progression --message="Installing Composer..." --weight=10
 
 # Install Composer
-#ynh_install_composer
-
-#ynh_exec_warn_less ynh_composer_exec --commands=\"dump-autoload\"
+ynh_install_composer
+ynh_exec_warn_less ynh_composer_exec --commands=\"dump-autoload\"
 
 pushd "$final_path"
-	php$phpversion artisan key:generate -n
+	#php$phpversion artisan key:generate -n
 	php$phpversion artisan migrate -n --force
-	php$phpversion artisan config:clear -n
-	php$phpversion artisan config:cache -n
+	#php$phpversion artisan config:clear -n
+	#php$phpversion artisan config:cache -n
 popd
 
 ynh_backup_if_checksum_is_different --file="$final_path/.env"