diff --git a/containers/zammad/Dockerfile b/containers/zammad/Dockerfile
index 369ca9d..c54d3f7 100644
--- a/containers/zammad/Dockerfile
+++ b/containers/zammad/Dockerfile
@@ -1,6 +1,6 @@
 # note: zammad is currently incompatible to alpine because of:
 # https://github.com/docker-library/ruby/issues/113
-FROM ruby:2.7.4-slim AS builder
+FROM ruby:3.0.4-slim AS builder
 
 ARG BUILD_DATE
 ARG DEBIAN_FRONTEND=noninteractive
@@ -24,7 +24,7 @@ RUN chmod +x /tmp/setup.sh; \
     /tmp/setup.sh builder
 
 
-FROM ruby:2.7.4-slim
+FROM ruby:3.0.4-slim
 
 ARG BUILD_DATE
 ARG DEBIAN_FRONTEND=noninteractive
@@ -37,7 +37,7 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.vcs-url="https://github.com/zammad/zammad" \
       org.label-schema.vcs-type="Git" \
       org.label-schema.vendor="Zammad" \
-      org.label-schema.schema-version="5.1.0" \
+      org.label-schema.schema-version="5.2.0" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
 
 ENV GIT_BRANCH stable
diff --git a/containers/zammad/docker-entrypoint.sh b/containers/zammad/docker-entrypoint.sh
index 56736f1..68fe76c 100755
--- a/containers/zammad/docker-entrypoint.sh
+++ b/containers/zammad/docker-entrypoint.sh
@@ -106,7 +106,7 @@ if [ "$1" = 'zammad-init' ]; then
     if [ "${ELASTICSEARCH_REINDEX}" == "true" ]; then
       if ! curl -s "${SSL_SKIP_VERIFY}" "${ELASTICSEARCH_SCHEMA}://${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}/_cat/indices" | grep -q zammad; then
         echo "rebuilding es searchindex..."
-        bundle exec rake searchindex:rebuild
+        bundle exec rake zammad:searchindex:rebuild
       fi
     fi
   fi