diff --git a/Dockerfile b/Dockerfile
index 12fd152..3ee177d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM luzifer/alpine-nginx-php
 
-ENV WP_VERSION=5.5.2 \
-    WP_CHECKSUM=04fdfe636f175fa49fce1ed8b96b12d1adb89b1c669b8c43b423f6cff94f3e1c
+ENV WP_VERSION=5.5.3 \
+    WP_CHECKSUM=000dc031acc0e182dc1dc9430a9b4eca4ea1492cf59ac39fb3007b453ecbe787
 
 COPY rootfs /
 RUN set -ex && /usr/local/bin/container-setup