diff --git a/docker/Dockerfile.arm64 b/docker/Dockerfile.arm64
index 60229df..eb823a1 100644
--- a/docker/Dockerfile.arm64
+++ b/docker/Dockerfile.arm64
@@ -1,4 +1,4 @@
-FROM arm64v8/alpine:3.14@sha256:b4da1299e77c63f8706427cd39154e726a9b7646d29e2fc05d65b513373f9f5e
+FROM arm64v8/alpine:3.15@sha256:c74f1b1166784193ea6c8f9440263b9be6cae07dfe35e32a5df7a31358ac2060
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"