diff --git a/Dockerfile b/Dockerfile
index c0e020a..ad30b0c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,5 +18,8 @@ RUN chmod 755 /usr/local/bin/gemcompiler
 RUN install -dm 2750 -o builder -g builder /srv/gems
 VOLUME /srv/gems
 
+RUN apk add --no-cache file-dev
+RUN apk add --no-cache libssh2-dev
+
 USER builder
 ENTRYPOINT /usr/local/bin/gemcompiler