diff --git a/app/Http/Controllers/ClientPortal/InvitationController.php b/app/Http/Controllers/ClientPortal/InvitationController.php
index eece9465c5..25fea802d1 100644
--- a/app/Http/Controllers/ClientPortal/InvitationController.php
+++ b/app/Http/Controllers/ClientPortal/InvitationController.php
@@ -136,10 +136,10 @@ class InvitationController extends Controller
         } else {
             $is_silent = 'true';
 
-            return redirect()->route('client.'.$entity.'.show', [$entity => $this->encodePrimaryKey($invitation->{$key}), 'silent' => $is_silent]);
+            return redirect()->route('client.'.$entity.'.show', [$entity => $this->encodePrimaryKey($invitation->{$key}), 'silent' => $is_silent])->header('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
         }
 
-        return redirect()->route('client.'.$entity.'.show', [$entity => $this->encodePrimaryKey($invitation->{$key})]);
+        return redirect()->route('client.'.$entity.'.show', [$entity => $this->encodePrimaryKey($invitation->{$key})])->header('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
     }
 
     private function fireEntityViewedEvent($invitation, $entity_string)
diff --git a/resources/views/portal/ninja2020/components/no-cache.blade.php b/resources/views/portal/ninja2020/components/no-cache.blade.php
index 4a7bc88647..3ef938bef2 100644
--- a/resources/views/portal/ninja2020/components/no-cache.blade.php
+++ b/resources/views/portal/ninja2020/components/no-cache.blade.php
@@ -1,5 +1,3 @@
-<meta http-equiv="cache-control" content="max-age=0" />
-<meta http-equiv="cache-control" content="no-cache" />
+<meta http-equiv="cache-control" content="no-cache, no-store, must-revalidate" />
 <meta http-equiv="expires" content="0" />
-<meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT" />
 <meta http-equiv="pragma" content="no-cache" />