diff --git a/Dockerfile b/Dockerfile
index 343e54a..5c13cbb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG ALPINE_VERSION=3.14
+ARG ALPINE_VERSION=3.15
 FROM alpine:${ALPINE_VERSION}
 LABEL Maintainer="Tim de Pater <code@trafex.nl>"
 LABEL Description="Lightweight container with Nginx 1.20 & PHP 8.0 based on Alpine Linux."