diff --git a/docs/guide/structure-extensions.md b/docs/guide/structure-extensions.md
index bd5e343e8e..fb5ac132c7 100644
--- a/docs/guide/structure-extensions.md
+++ b/docs/guide/structure-extensions.md
@@ -425,7 +425,7 @@ registered on [Packagist](https://packagist.org/) and can be easily installed as
   provides the supports for running tasks asynchronously via queues.
   It supports queues based on DB, Redis, RabbitMQ, AMQP, Beanstalk and Gearman.
 - [yiisoft/yii2-redis](https://www.yiiframework.com/extension/yiisoft/yii2-redis):
-  provides the support for using [redis](http://redis.io/). It includes features such as basic query,
+  provides the support for using [redis](https://redis.io/). It includes features such as basic query,
   Active Record, caching, etc.
 - [yiisoft/yii2-shell](https://www.yiiframework.com/extension/yiisoft/yii2-shell):
   provides an interactive shell based on [psysh](http://psysh.org/).
diff --git a/docs/guide/tutorial-performance-tuning.md b/docs/guide/tutorial-performance-tuning.md
index 104a055fb3..20761c5204 100644
--- a/docs/guide/tutorial-performance-tuning.md
+++ b/docs/guide/tutorial-performance-tuning.md
@@ -132,7 +132,7 @@ You may also store session data in a cache by using [[yii\web\CacheSession]]. In
 when the storage limit is reached. For this reason, you should mainly use those cache storage that do not enforce
 storage limit.
 
-If you have [Redis](http://redis.io/) on your server, it is highly recommended you use it as session storage by using
+If you have [Redis](https://redis.io/) on your server, it is highly recommended you use it as session storage by using
 [[yii\redis\Session]].