diff --git a/manifest.json b/manifest.json
index 424cf31..d68d954 100644
--- a/manifest.json
+++ b/manifest.json
@@ -13,7 +13,8 @@
         "website": "https://hackmd.io/",
         "admindoc": "https://hackmd.io/c/codimd-documentation/%2Fs%2Fcodimd-documentation#Administration-Guides",
         "userdoc": "https://hackmd.io/c/codimd-documentation/%2Fs%2Fcodimd-documentation#User-Guides",
-        "code": "https://github.com/hackmdio/codimd"
+        "code": "https://github.com/hackmdio/codimd",
+        "cpe": "cpe:2.3:a:hackmd:codimd"
     },
     "license": "AGPL-3.0-only",
     "maintainer": {
@@ -27,7 +28,7 @@
         "nginx"
     ],
     "arguments": {
-        "install" : [
+        "install": [
             {
                 "name": "domain",
                 "type": "domain"
@@ -43,4 +44,4 @@
             }
         ]
     }
-}
+}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 4548150..ac64594 100644
--- a/scripts/install
+++ b/scripts/install
@@ -34,6 +34,12 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 ynh_script_progression --message="Validating installation parameters..." --weight=1
 
+# Stop if architecture is ARM
+case $YNH_ARCH in
+    arm*|armhf) ynh_die --message="Sorry, your architecture $YNH_ARCH is not supported by CodiMD. Aborting.";;
+    *)         ;;
+esac
+
 final_path=/var/www/$app
 test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index eb9c4c2..ae76dee 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -82,25 +82,8 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..." --weight=16
 
-	# Create a temporary directory
-	#tmpdir="$(mktemp -d)"
-	
-	# Backup the config file in the temp dir
-	#cp -a "$final_path/config.json" "$tmpdir/config.json"
-	#cp -a "$final_path/.sequelizerc" "$tmpdir/.sequelizerc"
-	
-	# Remove the app directory securely
-	#ynh_secure_remove --file=$final_path
-
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir=$final_path --keep="$final_path/config.json $final_path/.sequelizerc"
-
-	#Copy the admin saved settings from tmp directory to final path	
-	#cp -a "$tmpdir/config.json" "$final_path/config.json" 
-	#cp -a "$tmpdir/.sequelizerc" "$final_path/.sequelizerc"
-
-	# Remove the tmp directory securely
-	#ynh_secure_remove --file="$tmpdir"
+	ynh_setup_source --dest_dir=$final_path --keep="config.json .sequelizerc"
 fi
 
 chmod 750 "$final_path"