diff --git a/update_version.sh b/update_version.sh
new file mode 100644
index 0000000..23f08cb
--- /dev/null
+++ b/update_version.sh
@@ -0,0 +1,95 @@
+#!/usr/bin/bash
+
+set -e
+
+curVersion=$(grep Version: cockpit.spec | sed -e 's,^\(\s*Version:\s*\)\(.*\)\s*$,\2,')
+
+if [[ ! "$curVersion" =~ ^[0-9]+$ ]]; then
+  echo "Error: curVersion is not a valid integer"
+  exit 1
+fi
+
+###
+### Fetch latest soruces
+###
+
+# fetch latest theme
+if [ ! -d cockpit-suse-theme ]; then
+    git clone https://github.com/dgdavid/cockpit-suse-theme.git
+else
+	git -C cockpit-suse-theme pull --ff-only
+fi
+git -C cockpit-suse-theme archive --format=tar --prefix=cockpit-suse-theme/ -o ../cockpit-suse-theme.tar HEAD
+
+# fetch latest cockpit
+if [ ! -d cockpit ]; then
+	git clone https://github.com/cockpit-project/cockpit.git cockpit
+else
+    git -C cockpit checkout main
+	git -C cockpit fetch
+fi
+
+newVersion=$(git -C cockpit tag | grep '^[0-9.]\+$' | sort -rn | head -1)
+
+echo "Current version: $curVersion"
+echo "    New version: $newVersion"
+
+if [ "$curVersion" -ge "$newVersion" ]; then
+	echo "Nothing to do."
+	exit 0
+fi
+
+###
+### UPDATE
+###
+# # initialize all submodules
+git -C cockpit checkout $newVersion
+git -C cockpit submodule update --init --depth 1
+diff cockpit/node_modules/.package.json cockpit/package.json
+cp cockpit/node_modules/.package-lock.json package-lock.json
+
+# update node_modules
+osc service mr
+
+# remove node_modules and tests
+git -C cockpit submodule deinit node_modules test/reference
+
+# update tarballs
+CockpitPath="cockpit-$newVersion/"
+MainTarball="cockpit.tar"
+D=$PWD
+
+git -C cockpit archive --format=tar --prefix=$CockpitPath -o "$D/$MainTarball" $newVersion
+
+# append each initialized submodule
+git -C cockpit submodule foreach "n=\$(basename \$sm_path)
+git archive --format=tar --prefix=${CockpitPath}\${sm_path}/ -o \"$D/\$n.tar\" HEAD
+"
+SubmoduleTarballs=$(git -C cockpit submodule foreach --quiet "echo \$(basename \$sm_path.tar)")
+
+# need to unpack and pack again, because OBS can't deal with concatenated tarballs :(
+rm -f "cockpit-$newVersion.tar"
+rm -rf cockpit-$newVersion/
+for i in $MainTarball $SubmoduleTarballs; do
+	tar xf $i
+done
+rm $MainTarball $SubmoduleTarballs
+tar zcf cockpit-$newVersion.tar.gz cockpit-$newVersion/
+
+echo "Archive created: cockpit-$newVersion.tar"
+
+# Update spec file
+git -C cockpit remote show suse || git -C cockpit remote add suse git@github.com:openSUSE/cockpit.git
+git -C cockpit fetch suse opensuse-$curVersion
+git -C cockpit checkout -b opensuse-$newVersion suse/opensuse-$curVersion
+git -C cockpit rebase -i $newVersion
+
+echo "Don't forget to:"
+echo "  1. finish rebase"
+echo "  2. push new branch"
+echo "  3. update cockpit.spec, and"
+echo "  4. set new default branch on GitHub"
+
+# Updating version in spec file
+sed -i -e "s,^\(\s*Version:\s*\)\(.*\)\s*$,\1${newVersion}," cockpit/tools/cockpit.spec
+