diff --git a/Dockerfile b/Dockerfile
index ec735ba..32eed90 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM alpine:3.10 AS builder
 
-ENV VERSION=1.4-rc1
-ENV SHA256_SUM=24a6c8ba9dcd4105f578fba1fadef27c878693612b74d8b781f98ac89de3285c
+ENV VERSION=1.4-rc2
+ENV SHA256_SUM=285f7bae399ff85338de8293d863f94846ab3c03761ad82822259684835ec22e
 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