diff --git a/Dockerfile b/Dockerfile
index 97b113b..17f582b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM alpine:3.12 AS builder
 
-ENV VERSION=1.4.4
-ENV SHA256_SUM=2b8923836a0f83f9806fffc6dfa245705968a0005deab66c1056570eae11c7d7
+ENV VERSION=1.4.9
+ENV SHA256_SUM=9fac7463a1365ac30c097dc03c3e22d17a73920fa728069c122e60b9d4c8ecb2
 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
@@ -39,6 +39,7 @@ RUN apk add --no-cache \
     php7-apcu \
     php7-gd \
     php7-ctype \
+    php7-xmlreader \
     php7-xmlwriter \
     php7-tokenizer \
     php7-curl \