diff --git a/README.md b/README.md
index 73bbc5a..ad747f7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # pihole k8s manifest
 
+## References
+
+* https://pi-hole.net/
+* https://hub.docker.com/r/pihole/pihole
+
 ## Introduction
 
 This deploys a pihole server.