diff --git a/data/sql/grid_alternatives.sql b/data/sql/grid_alternatives.sql
index 2098fe8c55..041bec5f13 100644
--- a/data/sql/grid_alternatives.sql
+++ b/data/sql/grid_alternatives.sql
@@ -274,6 +274,9 @@ VALUES
 -- se_lantmateriet - Sweden
 ('SWEN17_RH2000.gtx','se_lantmateriet_SWEN17_RH2000.tif','SWEN17_RH2000.gtx','GTiff','geoid_like',0,NULL,'https://cdn.proj.org/se_lantmateriet_SWEN17_RH2000.tif',1,1,NULL),
 
+-- si_gurs - Slovenia
+('https://isgeoid.polimi.it/Geoid/Europe/Slovenia/public/Slovenia_2016_SLO_VRP2016_Koper_hybrQ_20221122.isg','si_gurs_SLO-VRP2016-Koper.tif',NULL,'GTiff','geoid_like',0,NULL,'https://cdn.proj.org/si_gurs_SLO-VRP2016-Koper.tif',1,1,NULL),
+
 -- sk_gku - Geodetický a kartografický ústav Bratislava (GKU)
 ('Slovakia_JTSK03_to_JTSK.LAS','sk_gku_JTSK03_to_JTSK.tif',NULL,'GTiff','hgridshift',0,NULL,'https://cdn.proj.org/sk_gku_JTSK03_to_JTSK.tif',1,1,NULL),
 ('Slovakia_ETRS89h_to_Baltic1957.gtx','sk_gku_Slovakia_ETRS89h_to_Baltic1957.tif',NULL,'GTiff','geoid_like',0,NULL,'https://cdn.proj.org/sk_gku_Slovakia_ETRS89h_to_Baltic1957.tif',1,1,NULL),