diff --git a/README.md b/README.md
index 9f8ec11b..cbf43976 100644
--- a/README.md
+++ b/README.md
@@ -1023,6 +1023,7 @@ like WhatsApp | `apiKey` | Yes | Yes |
 | [OnWater](https://onwater.io/) | Determine if a lat/lon is on water or land | No | Yes | Unknown |
 | [Open Topo Data](https://www.opentopodata.org) | Elevation and ocean depth for a latitude and longitude | No | Yes | No |
 | [OpenCage](https://opencagedata.com) | Forward and reverse geocoding using open data | `apiKey` | Yes | Yes |
+| [OpenPLZ API](https://www.openplzapi.org/) | A public street and postal code directory for Austria, Germany, Liechtenstein and Switzerland via an open REST API | No | Yes | Yes |
 | [openrouteservice.org](https://openrouteservice.org/) | Directions, POIs, isochrones, geocoding (+reverse), elevation, and more | `apiKey` | Yes | Unknown |
 | [OpenStreetMap](http://wiki.openstreetmap.org/wiki/API) | Navigation, geolocation and geographical data | `OAuth`| No | Unknown |
 | [Pinball Map](https://pinballmap.com/api/v1/docs) | A crowdsourced map of public pinball machines | No | Yes | Yes |