diff --git a/README.md b/README.md
index bd11309..b1ab892 100755
--- a/README.md
+++ b/README.md
@@ -10,9 +10,10 @@ Mo: morven [@] ilateral.co.uk
 
 ## Requirements
 
-SilverStripe 3.1 or greater.
-[SortableGridField](https://github.com/UndefinedOffset/SortableGridField)
+SilverStripe 4 or greater.
+[GridFieldExtensions](https://github.com/symbiote/silverstripe-gridfieldextensions)
+[GoogleMapField](https://github.com/BetterBrief/silverstripe-googlemapfield)
 
 ## Further Docs
 
-Further documentation is available [in docs](docs/en/index.md)
\ No newline at end of file
+Further documentation is available [in docs](docs/en/index.md)