diff --git a/core/lib/Drupal/Core/Routing/CachedUrlGenerator.php b/core/lib/Drupal/Core/Routing/CachedUrlGenerator.php
index 8eade10..d42b400 100644
--- a/core/lib/Drupal/Core/Routing/CachedUrlGenerator.php
+++ b/core/lib/Drupal/Core/Routing/CachedUrlGenerator.php
@@ -200,6 +200,9 @@ public function fromRequestStack(RequestStack $requestStack) {
     if ($this->languageManager->isMultilingual()) {
       $this->cacheKey .= '::' . $this->languageManager->getCurrentLanguage(Language::TYPE_URL)->getId();
     }
+
+    $this->cacheKey = sha1($this->cacheKey);
+
     $cached = $this->cache->get($this->cacheKey);
     if ($cached) {
       $this->cachedUrls = $cached->data;