diff --git a/app/views/contexts/_context.html.erb b/app/views/contexts/_context.html.erb
index 6e7b6ee9..5683779f 100644
--- a/app/views/contexts/_context.html.erb
+++ b/app/views/contexts/_context.html.erb
@@ -2,7 +2,7 @@
 @not_done = @not_done_todos.select {|t| t.context_id == context.id }
 # invalidate the cache every day because of staleness or
 # rendering of "due in x days" that change without touching updated at of the todo
-cache [context, @source_view, current_user.date.strftime("%Y%m%d")] do
+cache [context, @source_view, current_user.date.strftime("%Y%m%d"), @tag_name] do
 %>
   <div id="c<%= context.id %>" class="container context" style="display:<%= (collapsible && @not_done.empty?) ? "none" : "block" %>">
     <h2>