diff --git a/Dockerfile b/Dockerfile
index 89a7829..7d91e36 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,8 @@ FROM cloudron/base:1.0.0@sha256:147a648a068a2e746644746bbfb42eb7a50d682437cead3c
 RUN mkdir -p /app/code
 WORKDIR /app/code
 
+ARG VERSION=3.0.1
+
 RUN apt-key adv --fetch-keys http://dl.yarnpkg.com/debian/pubkey.gpg && \
     echo "deb http://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list && \
     apt-get update && \
@@ -16,7 +18,6 @@ ENV PATH /usr/local/node-10.15.3/bin:$PATH
 
 RUN gem install --no-document bundler -v 1.17.3
 
-ARG VERSION=2.9.2
 ENV RAILS_ENV production
 ENV NODE_ENV production
 RUN curl -L https://github.com/tootsuite/mastodon/archive/v${VERSION}.tar.gz | tar -xz --strip-components 1 -f - && \