diff --git a/nginx/nexus-pos.conf b/nginx/nexus-pos.conf
index 981fd5b..1c9195f 100644
--- a/nginx/nexus-pos.conf
+++ b/nginx/nexus-pos.conf
@@ -74,7 +74,7 @@ server {
     }
 
     location = / {
-        return 302 /pos/login;
+        return 302 /pos/login?v=34;
     }
 
     location / {
diff --git a/pos/app.py b/pos/app.py
index 8c2d8ee..3323b21 100644
--- a/pos/app.py
+++ b/pos/app.py
@@ -145,6 +145,14 @@ def create_app():
 
     @app.route('/pos/login')
     def pos_login():
+        # Bust browser cache by always serving the login page under a versioned URL.
+        if request.args.get('v') != '34':
+            response = make_response(redirect('/pos/login?v=34'))
+            response.headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, max-age=0'
+            response.headers['Pragma'] = 'no-cache'
+            response.headers['Expires'] = '0'
+            return response
+
         response = make_response(render_template('login.html',
                                tenant_id=getattr(g, 'tenant_id', None),
                                tenant_name=getattr(g, 'tenant_name', None),