diff --git a/Dockerfile b/Dockerfile
index 651aaac..3f8b744 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # http://product_installation_URL/?admin
 # Default login is "admin", password is "12345".
-FROM alpine:3.11
+FROM alpine:3.13
 MAINTAINER Andrey Arapov <andrey.arapov@nixaid.com>
 
 # Install the dependencies
@@ -21,12 +21,12 @@ RUN adduser -D -u $UID -h $HOME -s /bin/true $USER && \
 # Obtain RainLoop Webmail Community edition,
 # verify its integrity using GnuPG and then decompress it
 USER $USER
-ENV RLFILE rainloop-1.14.0.zip
-ENV RLFILESIG rainloop-1.14.0.zip.asc
+ENV RLFILE rainloop-1.15.0.zip
+ENV RLFILESIG rainloop-1.15.0.zip.asc
 ENV FINGERPRINT "3B797ECE694F3B7B70F311A4ED7C49D987DA4591"
 WORKDIR $DATA
-RUN wget --progress=bar:force:noscroll -O $RLFILE https://github.com/RainLoop/rainloop-webmail/releases/download/v1.14.0/$RLFILE && \
-    wget --progress=bar:force:noscroll -O $RLFILESIG https://github.com/RainLoop/rainloop-webmail/releases/download/v1.14.0/$RLFILESIG && \
+RUN wget --progress=bar:force:noscroll -O $RLFILE https://github.com/RainLoop/rainloop-webmail/releases/download/v1.15.0/$RLFILE && \
+    wget --progress=bar:force:noscroll -O $RLFILESIG https://github.com/RainLoop/rainloop-webmail/releases/download/v1.15.0/$RLFILESIG && \
     export GNUPGHOME="$(mktemp -d)" && \
     gpg --keyserver keyserver.ubuntu.com --recv-keys "$FINGERPRINT" && \
     gpg --batch --verify $RLFILESIG $RLFILE && \