diff --git a/registry.txt b/registry.txt
index 5babc25f..e470b1a1 100644
--- a/registry.txt
+++ b/registry.txt
@@ -3028,3 +3028,4 @@ https://github.com/RobTillaart/DS18B20.git|Contributed|DS18B20_RT
 https://github.com/DhrBaksteen/ArduinoPianoBoard.git|Contributed|Piano Board
 https://github.com/ademuri/esp-simple-web-dashboard.git|Contributed|simple-web-dashboard
 https://github.com/arkhipenko/Dictionary.git|Contributed|Dictionary
+https://github.com/RobTillaart/MultiMap.git|Contributed|MultiMap