diff --git a/README.md b/README.md
index 0837ee91..876813a9 100644
--- a/README.md
+++ b/README.md
@@ -978,6 +978,7 @@ Table of Contents
   * [nextdns.io](https://nextdns.io) - DNS based firewall, 300K free queries monthly
   * [noip](https://www.noip.com/) — a dynamic dns service that allows up to 3 hostnames free with confirmation every 30 days
   * [ns1.com](https://ns1.com/) — Data Driven DNS, automatic traffic management, 500k free queries
+  * [nsupdate.info](https://www.nsupdate.info/) — Free and open-source Dynamic DNS service
   * [pointhq.com](https://pointhq.com/developer) — Free DNS hosting on Heroku.
   * [selectel.com](https://selectel.com/services/dns/) — Free DNS hosting with unlimited records, anycast
   * [web.gratisdns.dk](https://web.gratisdns.dk/domaener/dns/) — Free DNS hosting.
@@ -1238,7 +1239,7 @@ Table of Contents
    * [osmnames](https://osmnames.org/) — Geocoding, search results ranked by the popularity of related Wikipedia page.
    * [positionstack](https://positionstack.com/) - Free geocoding for global places and coordinates. 25.000 Requests per month for personal use.
    * [stadiamaps.com](https://stadiamaps.com/) — Map tiles, routing, navigation, and other geospatial APIs. 2,500 free map views and API requests / day for non-commercial usage and testing.
-   * [http://maps.stamen.com/](http://maps.stamen.com/) - Free map tiles and tile hosting.
+   * [maps.stamen.com](http://maps.stamen.com/) - Free map tiles and tile hosting.
    * [GeocodeAPI](https://geocodeapi.io) - Geocode API: Address to Coordinate Conversion & Geoparsing based on Pelias. Batch geocoding via CSV. 350000 free requests/month.
    * [Geokeo api](https://geokeo.com) - Geocoding api with language correction and more. Worldwide coverage. 2,500 free daily queries