diff --git a/README.md b/README.md
index e7a3b33..405e25d 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,12 @@ options:
 
 ## TODOs
 
+API backend:
+
+- Currently: nc-dnsapi
+- Alternatives:
+  - https://github.com/johndoe31415/dnssync_nc
+
 Alternative external IP detection:
 
 ```python