diff --git a/README.md b/README.md
index 14cf390..cc20b1d 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,8 @@ Cool links pointing to free stuff.
* <a href="https://standardebooks.org/" target="_blank" rel="noopener">Standard e-books</a>
* <a href="https://en.wikisource.org/w/index.php?search=incategory%3A%22cc-zero%7CPD-old%7CPD-old-70-1923%E2%80%8E%22&title=Special%3ASearch&profile=advanced&fulltext=1&advancedSearch-current=%7B%22namespaces%22%3A%5B100%2C102%2C106%2C114%2C0%5D%7D&ns100=1&ns102=1&ns106=1&ns114=1&ns0=1" target="_blank" rel="noopener">Wikisource - public domain search</a>
+ * <a href="https://open-slum.org/" target="_blank" rel="noopener">SLUM: The Shadow Library Uptime Monitor</a>
+
## Free Media
* <a href="https://fmhy.net/" target="_blank" rel="noopener">freemediaheckyeah</a>