diff --git a/src/Access/LatestRevisionCheck.php b/src/Access/LatestRevisionCheck.php
index 40ee81c..96908f5 100644
--- a/src/Access/LatestRevisionCheck.php
+++ b/src/Access/LatestRevisionCheck.php
@@ -1,6 +1,12 @@
 <?php
 
+/**
+ * @file
+ * Contains \Drupal\workbench_moderation\Access\LatestRevisionCheck
+ */
+
 namespace Drupal\workbench_moderation\Access;
+
 use Drupal\Core\Access\AccessResult;
 use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\EntityInterface;
@@ -9,10 +15,6 @@ use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\workbench_moderation\ModerationInformationInterface;
 use Symfony\Component\Routing\Route;
 
-/**
- * @file
- * Contains LatestRevisionCheck.php
- */
 class LatestRevisionCheck implements AccessInterface {
 
   /**
@@ -50,9 +52,10 @@ class LatestRevisionCheck implements AccessInterface {
 
     // This tab should not show up period unless there's a reason to show it.
     // @todo Do we need any extra cache tags here?
-    return $this->moderationInfo->hasForwardRevision($this->loadEntity($route, $route_match))
-      ? AccessResult::allowed()
-      : AccessResult::forbidden();
+    $entity = $this->loadEntity($route, $route_match);
+    return $this->moderationInfo->hasForwardRevision($entity)
+      ? AccessResult::allowed()->addCacheableDependency($entity)
+      : AccessResult::forbidden()->addCacheableDependency($entity);
   }
 
   /**
diff --git a/src/Plugin/Derivative/DynamicLocalTasks.php b/src/Plugin/Derivative/DynamicLocalTasks.php
index d408edb..3493bbb 100644
--- a/src/Plugin/Derivative/DynamicLocalTasks.php
+++ b/src/Plugin/Derivative/DynamicLocalTasks.php
@@ -94,9 +94,9 @@ class DynamicLocalTasks extends DeriverBase implements ContainerDeriverInterface
   }
 
   /**
-   * Returns an array of content entities that are potentially moderatable.
+   * Returns an array of content entities that are potentially moderateable.
    *
-   * @return array
+   * @return EntityTypeInterface[]
    *   An array of just those entities we care about.
    */
   protected function moderatableEntityDefinitions() {
@@ -109,7 +109,7 @@ class DynamicLocalTasks extends DeriverBase implements ContainerDeriverInterface
   /**
    * Returns an iterable of the config entities representing moderatable content.
    *
-   * @return array
+   * @return EntityTypeInterface[]
    *   An array of just those entity types we care about.
    */
   protected function moderatableEntityTypeDefinitions() {
diff --git a/src/Routing/EntityModerationRouteProvider.php b/src/Routing/EntityModerationRouteProvider.php
index c331cd4..c718228 100644
--- a/src/Routing/EntityModerationRouteProvider.php
+++ b/src/Routing/EntityModerationRouteProvider.php
@@ -5,10 +5,8 @@
  * Contains Drupal\workbench_moderation\Routing\EntityModerationRouteProvider.
  */
 
-
 namespace Drupal\workbench_moderation\Routing;
 
-
 use Drupal\Core\Entity\EntityFieldManagerInterface;
 use Drupal\Core\Entity\EntityHandlerInterface;
 use Drupal\Core\Entity\EntityTypeInterface;
@@ -18,6 +16,12 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
 
+/**
+ * Provides the following routes:
+ *
+ * - The latest version tab, showing the latest revision of an entity, not the
+ *   default one.
+ */
 class EntityModerationRouteProvider implements EntityRouteProviderInterface, EntityHandlerInterface  {
 
   /**