diff --git a/README.md b/README.md
index 42c4cc9..16226ba 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ pyRCV2 accepts data in the [BLT file format](http://www.dia.govt.nz/diawebsite.N
 * weighted inclusive Gregory STV (e.g. [Scottish STV](https://www.opavote.com/methods/scottish-stv-rules))
 * unweighted inclusive Gregory STV
 * [Wright STV](https://www.aph.gov.au/Parliamentary_Business/Committees/House_of_Representatives_Committees?url=em/elect07/subs/sub051.1.pdf)
+* exclusive Gregory STV (e.g. [PRSA 1977](https://www.prsa.org.au/rule1977.htm))
 
 pyRCV2 is highly customisable, including options for: