diff --git a/Dockerfile b/Dockerfile
index f8fd989..89920ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/amd64/elasticsearch:7.17.20@sha256:6d1e6b60b690403f468cf62211b44ec712a89c65f06271593f6ca968bca6a9c2
+FROM docker.io/amd64/elasticsearch:7.17.21@sha256:822e8de3e58341aecdc6d9e5a608baa5982bbb4c777473278c7b962ef0947822
 
 LABEL maintainer="ownCloud GmbH"
 LABEL org.opencontainers.image.authors="ownCloud GmbH"