diff --git a/Dockerfile b/Dockerfile
index 32421a4..68ebe71 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.15 AS builder
+FROM docker.io/alpine:3.15 AS builder
 
 RUN apk add --no-cache \
     php8 \
@@ -22,14 +22,14 @@ RUN echo "$COMPOSER_SHA256_SUM  composer.phar" | sha256sum -c - || exit 1
 RUN mv composer.phar /usr/bin/composer
 RUN chmod +x /usr/bin/composer
 
-ENV VERSION=1.5.2
-ENV SHA256_SUM=f03968381156fe790d858af7e069c5550a8577fb964f96624434895272053838
+ENV VERSION=1.5.3
+ENV SHA256_SUM=4bcfac219f2e0005c912dac3227743cc1ed0ded69c822f74c81a70d041e5a3bd
 RUN wget https://github.com/roundcube/roundcubemail/releases/download/$VERSION/roundcubemail-$VERSION-complete.tar.gz
 RUN echo "$SHA256_SUM  roundcubemail-$VERSION-complete.tar.gz" | sha256sum -c - || exit 1
 RUN mkdir -p /var/lib/roundcube
 RUN tar xzf roundcubemail-$VERSION-complete.tar.gz -C /var/lib/roundcube --strip 1
 
-FROM thallian/php8-fpm:latest
+FROM docker.io/thallian/php8-fpm:latest
 
 
 RUN apk add --no-cache \