diff --git a/.gitignore b/.gitignore
index 4dba5dd8df..f548c5488d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,10 @@ Gemfile*.lock
fcrepo4-data
fcrepo4-test-data
+## JS lock files
+yarn.lock
+package-lock.json
+
## MAC OS
.DS_Store
diff --git a/app/views/layouts/_head_tag_content.html.erb b/app/views/layouts/_head_tag_content.html.erb
index ce7c24f443..df6c0f185f 100644
--- a/app/views/layouts/_head_tag_content.html.erb
+++ b/app/views/layouts/_head_tag_content.html.erb
@@ -9,6 +9,7 @@ signed in %>
+
<%= yield :twitter_meta %>