diff --git a/README.md b/README.md
index 4e73d2339f7..bca53d2ff96 100644
--- a/README.md
+++ b/README.md
@@ -251,7 +251,7 @@ Browse http://localhost:3000/
 [![Deploy to Cloudron](https://cloudron.io/img/button.svg)](https://www.cloudron.io/store/com.rssbridgeapp.cloudronapp.html)
 [![Run on PikaPods](https://www.pikapods.com/static/run-button.svg)](https://www.pikapods.com/pods?run=rssbridge)
 
-The Heroku quick deploy currently does not work. It might possibly work if you fork this repo and
+The Heroku quick deploy currently does not work. It might work if you fork this repo and
 modify the `repository` in `scalingo.json`. See https://github.com/RSS-Bridge/rss-bridge/issues/2688
 
 Learn more in
@@ -259,6 +259,20 @@ Learn more in
 
 ## How-to
 
+### How to remove all cache items
+
+As current user:
+
+    bin/cache-clear
+
+As user rss-bridge:
+
+    sudo -u rss-bridge bin/cache-clear
+
+As root:
+
+    sudo bin/cache-clear
+
 ### How to fix "PHP Fatal error:  Uncaught Exception: The FileCache path is not writable"
 
 ```shell
@@ -277,13 +291,13 @@ rm -rf /var/www/rss-bridge/cache/ && mkdir /var/www/rss-bridge/cache/
 
 ### How to fix "attempt to write a readonly database" (sqlite)
 
-The sqlite cache file is not writeable.
+The sqlite files (db, wal and shm) are not writeable.
 
-    chown -v rss-bridge:rss-bridge cache/cache.sqlite
+    chown -v rss-bridge:rss-bridge cache/*
 
 ### How to fix "Unable to prepare statement: 1, no such table: storage" (sqlite)
 
-    rm cache/cache.sqlite
+    rm cache/*
 
 ### How to create a new bridge from scratch