diff --git a/Dockerfile b/Dockerfile
index 477285871f992386b70035cad2e8d76bbf0ba78c..9a442dc605869617b7a1840896f2452217e6c2e9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -82,6 +82,7 @@ RUN echo 'hosts: files dns' > /etc/nsswitch.conf && \
     \
     wget -q https://github.com/docker/compose/releases/download/${compose_version}/docker-compose-`uname -s`-`uname -m` -O /usr/local/bin/docker-compose && \
     chmod +x /usr/local/bin/docker-compose && \
+    chmod ugo+w /usr/local/bin/composer && \
     \
     wget -q https://getcomposer.org/composer.phar -O /usr/local/bin/composer && \
     chmod +x /usr/local/bin/composer && \