diff --git a/puid.py b/puid.py
index 817dcef..b13d74f 100644
--- a/puid.py
+++ b/puid.py
@@ -188,6 +188,7 @@
 lookup["NIMO Winter"] = "NIMOW"
 lookup["PUMaC Finals"] = "PUF"
 lookup["Putnam"] = "PTNM"
+lookup["Rioplatense"] = "RPTN"
 lookup["Schweitzer"] = "MSZ"
 lookup["Serbia RMM TST"] = "SRBRST"
 lookup["Sharygin"] = "SHRG"