diff --git a/Dockerfile b/Dockerfile
index 99dd6f4..25490cc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@ RUN apk --update add --virtual .build-deps tar curl && \
     rm -f /etc/php7/php-fpm.d/www.conf && \
     mkdir -p /var/www/app && \
     mkdir /var/www/.postgresql && \
-    echo "Installing FreshRSS '${FRESHRSS_TARBALL}' ..." && \
+    echo "Installing FreshRSS '${FRESHRSS_VERSION:-master}' ..." && \
     curl -SsL ${FRESHRSS_TARBALL} | tar xz -C /var/www/app/ --strip-components=1 && \
     curl -SsL -o /etc/php7/browscap.ini https://browscap.org/stream?q=Lite_PHP_BrowsCapINI && \
     apk del .build-deps && \