diff --git a/templates/base.html b/templates/base.html
index 5403e4e..ec56e4b 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -18,7 +18,7 @@
         <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
         <link href='https://fonts.googleapis.com/css?family=Roboto+Mono&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
         <link href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.98.0/css/materialize.min.css" type="text/css" rel="stylesheet" media="screen,projection"/>
-        <link href="{{ url_for('static', filename='css/digimarks.css') }}" type="text/css" rel="stylesheet" media="screen,projection"/>
+        <link href="{{ url_for('static', filename='css/digimarks.css') }}?20170204" type="text/css" rel="stylesheet" media="screen,projection"/>
         <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
     </head>
     <body class="grey lighten-4">
