diff --git a/Dockerfile b/Dockerfile
index f28527a..167f03c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 from jekyll/jekyll as builder
 add web /srv/jekyll
-run jekyll build --source /srv/jekyll --destination /tmp
+run bundle exec jekyll build --source /srv/jekyll --destination /tmp
 
 from nginx:alpine
 copy --from=builder /tmp /usr/share/nginx/html