diff --git a/mysql/README.md b/mysql/README.md
index 6f24cee2e..d5f561465 100644
--- a/mysql/README.md
+++ b/mysql/README.md
@@ -98,6 +98,8 @@ services:
 
   db:
     image: mysql
+    # NOTE: use of "mysql_native_password" is not recommended: https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password
+    # (this is just an example, not intended to be a production configuration)
     command: --default-authentication-plugin=mysql_native_password
     restart: always
     environment:
@@ -110,7 +112,7 @@ services:
       - 8080:8080
 ```
 
-[![Try in PWD](https://github.com/play-with-docker/stacks/raw/cff22438cb4195ace27f9b15784bbb497047afa7/assets/images/button.png)](http://play-with-docker.com?stack=https://raw.githubusercontent.com/docker-library/docs/b664a62bb7be3e0cbc2304e306ea42f33244fad1/mysql/stack.yml)
+[![Try in PWD](https://github.com/play-with-docker/stacks/raw/cff22438cb4195ace27f9b15784bbb497047afa7/assets/images/button.png)](http://play-with-docker.com?stack=https://raw.githubusercontent.com/docker-library/docs/06990e05c934d425c74addcc5ea462f53de6c8cd/mysql/stack.yml)
 
 Run `docker stack deploy -c stack.yml mysql` (or `docker-compose -f stack.yml up`), wait for it to initialize completely, and visit `http://swarm-ip:8080`, `http://localhost:8080`, or `http://host-ip:8080` (as appropriate).