diff --git a/UPGRADE-5.0.md b/UPGRADE-5.0.md
index 7e75c9593f..c25b547e21 100644
--- a/UPGRADE-5.0.md
+++ b/UPGRADE-5.0.md
@@ -243,6 +243,7 @@ FrameworkBundle
  * Removed `routing.loader.service`.
  * Added support for PHPUnit 8. A `void` return-type was added to the `KernelTestCase::tearDown()` and `WebTestCase::tearDown()` method.
  * Removed the `lock.store.flock`, `lock.store.semaphore`, `lock.store.memcached.abstract` and `lock.store.redis.abstract` services.
+ * Removed the `router.cache_class_prefix` parameter.
 
 HttpClient
 ----------
diff --git a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
index 8188769bdd..46dc89b255 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+++ b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
@@ -21,6 +21,7 @@ CHANGELOG
  * Service route loaders must be tagged with `routing.route_loader`. 
  * Added `slugger` service and `SluggerInterface` alias
  * Removed the `lock.store.flock`, `lock.store.semaphore`, `lock.store.memcached.abstract` and `lock.store.redis.abstract` services.
+ * Removed the `router.cache_class_prefix` parameter.
 
 4.4.0
 -----