diff --git a/memcache_admin/src/Controller/MemcacheStatisticsController.php b/memcache_admin/src/Controller/MemcacheStatisticsController.php
index f5044c2..4c894ff 100644
--- a/memcache_admin/src/Controller/MemcacheStatisticsController.php
+++ b/memcache_admin/src/Controller/MemcacheStatisticsController.php
@@ -90,7 +90,7 @@ class MemcacheStatisticsController extends ControllerBase {
 
             $data['server_overview'][$server]    = t('v@version running @uptime', ['@version' => $statistics['version'], '@uptime' => \Drupal::service('date.formatter')->formatInterval($statistics['uptime'])]);
             $data['server_pecl'][$server]        = t('n/a');
-            $data['server_time'][$server]        = format_date($statistics['time']);
+            $data['server_time'][$server]        = \Drupal::service('date.formatter')->format($statistics['time']);
             $data['server_connections'][$server] = $this->stats_connections($statistics);
             $data['cache_sets'][$server]         = $this->stats_sets($statistics);
             $data['cache_gets'][$server]         = $this->stats_gets($statistics);
@@ -522,7 +522,7 @@ class MemcacheStatisticsController extends ControllerBase {
               $v = $this->t('infinite');
             }
             else {
-              $v = $this->t('in @time', ['@time' => format_interval($v - REQUEST_TIME)]);
+              $v = $this->t('in @time', ['@time' => format_interval($v - \Drupal::time()->getRequestTime())]);
             }
           }
           $k    = new HtmlEscapedText($k);
diff --git a/src/MemcacheBackend.php b/src/MemcacheBackend.php
index da923ed..13192c4 100644
--- a/src/MemcacheBackend.php
+++ b/src/MemcacheBackend.php
@@ -120,7 +120,7 @@ class MemcacheBackend implements CacheBackendInterface {
     $cache->valid = TRUE;
 
     // Items that have expired are invalid.
-    if ($cache->expire != CacheBackendInterface::CACHE_PERMANENT && $cache->expire <= REQUEST_TIME) {
+    if ($cache->expire != CacheBackendInterface::CACHE_PERMANENT && $cache->expire <= \Drupal::time()->getRequestTime()) {
       $cache->valid = FALSE;
     }
 
@@ -217,7 +217,7 @@ class MemcacheBackend implements CacheBackendInterface {
   public function invalidateMultiple(array $cids) {
     foreach ($cids as $cid) {
       if ($item = $this->get($cid)) {
-        $item->expire = REQUEST_TIME - 1;
+        $item->expire = \Drupal::time()->getRequestTime() - 1;
         $this->memcache->set($cid, $item);
       }
     }