diff --git a/files/update_mastodon.sh b/files/update_mastodon.sh
index 3c83128..81ff184 100755
--- a/files/update_mastodon.sh
+++ b/files/update_mastodon.sh
@@ -137,7 +137,7 @@ if [ "${current_tag}" != "${tag}" ] || [ "${reinstall}" ]; then
     if [ "${dummy}" == "true" ]; then
         echo sudo -u mastodon "${mastodon_home}/.rbenv/shims/bundle" install
     else
-        sudo -u mastodon "${mastodon_home}/.rbenv/shims/bundle" install
+        sudo -u mastodon "${mastodon_home}/.rbenv/shims/bundle" install --force
     fi
     if [ "${DEBUG}" == "true" ]; then
         echo "Running yarm install..."