diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/cache/CachePluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/cache/CachePluginBase.php
index ebae468..6cce4b0 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/cache/CachePluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/cache/CachePluginBase.php
@@ -295,7 +295,7 @@ public function generateResultsKey() {
         }
       }
 
-      $this->resultsKey = $this->view->storage->get('name') . ':' . $this->displayHandler->display['id'] . ':results:' . md5(serialize($key_data));
+      $this->resultsKey = $this->view->storage->get('name') . ':' . $this->displayHandler->display['id'] . ':results:' . hash('sha256', serialize($key_data));
     }
 
     return $this->resultsKey;
@@ -319,7 +319,7 @@ public function generateOutputKey() {
         'base_url' => $GLOBALS['base_url'],
       );
 
-      $this->outputKey = $this->view->storage->get('name') . ':' . $this->displayHandler->display['id'] . ':output:' . md5(serialize($key_data));
+      $this->outputKey = $this->view->storage->get('name') . ':' . $this->displayHandler->display['id'] . ':output:' . hash('sha256', serialize($key_data));
     }
 
     return $this->outputKey;
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
index 06780c3..a9d79ba 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
@@ -130,7 +130,7 @@ public function initDisplay(ViewExecutable $view, array &$display, array &$optio
     // Cache for unpackOptions, but not if we are in the ui.
     static $unpack_options = array();
     if (empty($view->editing)) {
-      $cid = 'unpackOptions:' . md5(serialize(array($this->options, $options)));
+      $cid = 'unpackOptions:' . hash('sha256', serialize(array($this->options, $options)));
       if (empty($unpack_options[$cid])) {
         $cache = views_cache_get($cid, TRUE);
         if (!empty($cache->data)) {
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/style/StylePluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/style/StylePluginBase.php
index d577365..1fd2c22 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/style/StylePluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/style/StylePluginBase.php
@@ -556,7 +556,7 @@ function render_grouping($records, $groupings = array(), $group_rendered = NULL)
               // Not all field handlers return a scalar value,
               // e.g. views_handler_field_field.
               if (!is_scalar($grouping)) {
-                $grouping = md5(serialize($grouping));
+                $grouping = hash('sha256', serialize($grouping));
               }
             }
           }
diff --git a/core/modules/views/lib/Drupal/views/ViewExecutable.php b/core/modules/views/lib/Drupal/views/ViewExecutable.php
index ec1fc6d..1b6e4fc 100644
--- a/core/modules/views/lib/Drupal/views/ViewExecutable.php
+++ b/core/modules/views/lib/Drupal/views/ViewExecutable.php
@@ -1413,7 +1413,7 @@ public function preExecute($args = array()) {
     }
 
     // Allow hook_views_pre_view() to set the dom_id, then ensure it is set.
-    $this->dom_id = !empty($this->dom_id) ? $this->dom_id : md5($this->storage->get('name') . REQUEST_TIME . rand());
+    $this->dom_id = !empty($this->dom_id) ? $this->dom_id : hash('sha256', $this->storage->get('name') . REQUEST_TIME . mt_rand());
 
     // Allow the display handler to set up for execution
     $this->display_handler->preExecute();