diff --git a/Dockerfile b/Dockerfile
index 03dd23b..4987ff5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,6 +24,7 @@ RUN export BUILD_DEPS="build-base \
 		   su-exec \
 		   s6 \
 		   ca-certificates \
+		   coreutils \
 && gem install bundler \
 && git clone -b master https://github.com/diaspora/diaspora.git /diaspora \
 && cd /diaspora \