diff --git a/sbin/entrypoint.sh b/sbin/entrypoint.sh
index 1adc139..9a18a73 100755
--- a/sbin/entrypoint.sh
+++ b/sbin/entrypoint.sh
@@ -6,7 +6,7 @@ set -eu -o pipefail
 run_jekyll() {
   set -eu
 
-  jekyll serve \
+  bundle exec jekyll serve \
     --port "$JEKYLL_PORT" \
     --host "$JEKYLL_HOST" \
     --trace