diff --git a/publish.sh b/publish.sh
index 32d2cdc..53ed167 100755
--- a/publish.sh
+++ b/publish.sh
@@ -12,14 +12,24 @@ ct lint # || exit 1
 for p in * ; do
   if \
     [ ! -d $p ] || \
+    [ $p == template ] || \
+    [ $p == docs ] || \
     [ ! -f $p/Chart.yaml ] \
     ; then
     continue
   fi
 
   echo "${p}:";
+  lastVersion=$(oras repo tags "${HELM_REPO}/${p}" | sort --sort=version | tail -1)
+  echo "last pkg: ${lastVersion}"
   v=$(dasel -f "${p}/Chart.yaml" -s version)
   echo "version: ${v}";
+  if [ "${v}" == "${lastVersion}" ]; then
+    echo "nothing changed"
+    echo
+    continue
+  fi
+  echo
 
   echo "update docs"
   helm-docs -t ./README.md.gotmpl -t _docs.gotmpl -o README.md -g "${p}"
@@ -27,6 +37,7 @@ for p in * ; do
   echo "package and push helm-chart"
   helm package "${p}"
   helm push "${p}-${v}.tgz" "${HELM_REPO_URL}";
+  oras tag "${HELM_REPO}/${p}:${v}" "${v%\.[0-9]*}" "${v%\.[0-9]*\.[0-9]*}" "latest"
 
   echo "push to git"
   set -e