diff --git a/conf/mc_amd64.src b/conf/mc_amd64.src
index 904ef69..a32de2d 100644
--- a/conf/mc_amd64.src
+++ b/conf/mc_amd64.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://dl.min.io/client/mc/release/linux-amd64/archive/mc.RELEASE.2022-12-24T15-21-38Z
-SOURCE_SUM=8274f56d3ca69b2538fd818ff53a793c2fe1fc568489d97ee74d463123536aa6
+SOURCE_URL=https://dl.min.io/client/mc/release/linux-amd64/archive/mc.RELEASE.2023-01-28T20-29-38Z
+SOURCE_SUM=ecd7b92a7a5c6e74db16fcd19950a28fa8ccb1fcc343ff37050787da346f7d4e
 SOURCE_SUM_PRG=sha256sum
 SOURCE_IN_SUBDIR=false
 SOURCE_FILENAME=mc
diff --git a/conf/mc_arm64.src b/conf/mc_arm64.src
index ac46f4e..610837a 100644
--- a/conf/mc_arm64.src
+++ b/conf/mc_arm64.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://dl.min.io/client/mc/release/linux-arm64/archive/mc.RELEASE.2022-12-24T15-21-38Z
-SOURCE_SUM=5a29fb81e9a7d75b0afca9fbccfca6eba6c54e7dcefbe8b0ac662bc7a70e089a
+SOURCE_URL=https://dl.min.io/client/mc/release/linux-arm64/archive/mc.RELEASE.2023-01-28T20-29-38Z
+SOURCE_SUM=319fb47eb7f48e3e6efff1151bb82d44463d5c23f94495146c813f9ed2531a4b
 SOURCE_SUM_PRG=sha256sum
 SOURCE_IN_SUBDIR=false
 SOURCE_FILENAME=mc
diff --git a/scripts/upgrade b/scripts/upgrade
index d3027c7..a187156 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -128,6 +128,23 @@ ynh_script_progression --message="Integrating service in YunoHost..." --weight=1
 
 yunohost service add $app --description="A High Performance, Kubernetes Native Object Storage" --log="/var/log/$app/$app.log"
 
+#=================================================
+# ENSURE DOWNWARD COMPATIBILITY
+#=================================================
+ynh_script_progression --message="Ensuring downward compatibility..."
+
+if ynh_compare_current_package_version --comparison lt --version 2022.12.12~ynh1
+then
+	ynh_script_progression --message="Moving old Filesystem to secure MinIO start"
+	tmp="/tmp/minio"
+	ynh_exec_warn_less cp -Ra "$datadir" "$tmp"
+	ynh_secure_remove --file="$datadir"
+	ynh_exec_warn_less mkdir "$datadir"
+	chmod 750 "$datadir"
+	chmod -R o-rwx "$datadir"
+	chown -R $app:www-data "$datadir"
+fi
+
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
@@ -159,21 +176,20 @@ ynh_script_progression --message="Ensuring downward compatibility..."
 if ynh_compare_current_package_version --comparison lt --version 2022.12.12~ynh1
 then
 	ynh_script_progression --message="Migration from Filesystem to Single-Node Single-Drive mode"
-	pushd $datadir
+	pushd "$tmp/"
 		for d in * ; do
 		if [ "$d" == "*" ]
 		then
 			ynh_script_progression --message="No buckets to migrate"
 		else
 			ynh_script_progression --message="Migrating bucket $d"
-				mv "$d" "DATA_$d"
 				pushd $mc_path
 					ynh_exec_warn_less sudo -u $app ./mc mb minio/"$d"
-					ynh_exec_warn_less sudo -u $app ./mc mirror --preserve "$datadir/DATA_$d" minio/"$d"
+					ynh_exec_warn_less sudo -u $app ./mc mirror --preserve "$tmp/$d" "minio/$d"
 					# This is a hack, but it will make outline_ynh users' lifes much easier !
 					if [ "$d" == "outlinestorage" ]
 					then
-						ynh_exec_warn_less sudo -u $app ./mc policy set public minio/outlinestorage
+						ynh_exec_warn_less sudo -u $app ./mc anonymous set public minio/outlinestorage
 					else
 						ynh_script_progression --message="Bucket is migrated and objects are now mirrored. However, make sure to set properly access policy of bucket $d. That part of the migration can't be automated, sorry ! You can log into the minio console to perform your changes."
 					fi
@@ -182,6 +198,7 @@ then
 		fi
 		done
 	popd
+	ynh_secure_remove --file="$tmp"
 else
 	ynh_script_progression --message="No migration required"
 fi