diff --git a/check_update_misskey_git.sh b/check_update_misskey_git.sh
new file mode 100755
index 0000000..88f0614
--- /dev/null
+++ b/check_update_misskey_git.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+# Try to determine quickly if an update is due
+# This script may trash your instance, use with caution, make backups...
+#
+# Return 0 if an upgrade is needed
+#
+
+### You will need to adjust Paths ###
+# Store containers log
+LOG=/var/log/docker/misskey.log
+# Misskey (git) code directory
+CODE=/usr/local/misskey/code
+# Misskey (containers volumes) data directory
+DATA=/usr/local/misskey/data
+# Docker compose file name
+COMPOSE=docker-compose.yml
+COMPOSE=misskey-arm64.yml
+# Backup destination directory
+DST=/usr/local/backup
+# Automatically stop, update and start the running instance
+AUTOUPDATE=1
+TMP=/tmp/.update_misskey.$$
+###
+
+if [ ! -d $CODE ] || [ ! -d $DATA ]; then
+  echo "Error, you may need to adjust path in this script"
+  exit 100
+fi
+
+cd $CODE
+mv package.json package.json.$$
+
+# Compare version before/after pulling files
+currentVersion=`grep version package.json.$$ | awk '{ print $2 }' | sed 's/\"//g' | sed 's/,//'`
+
+git checkout origin/master -- package.json
+if [ $? -ne 0 ]; then
+  echo "Error, bailing out"
+  mv package.json.$$ package.json
+  exit 100
+fi
+
+latestVersion=`grep version package.json | awk '{ print $2 }' | sed 's/\"//g' | sed 's/,//'`
+rm -f package.json
+mv package.json.$$ package.json
+
+echo -n "Current:$currentVersion Latest:$latestVersion... "
+if [ "$currentVersion" == "$latestVersion" ]; then
+  echo "Your Misskey code is already up to date."
+  exit 1
+fi
+
+echo "Upgrade needed."
+
+exit 0