diff --git a/lineage_notes.txt b/lineage_notes.txt
index 094c9370..cf278080 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -2879,6 +2879,7 @@ FU.3	Alias of XBB.1.16.1.3, C11665T, India-RJ
 XBB.1.16.2	Defined by ORF3a:V13L, ORF1a:P926H, India
 GY.1	Alias of XBB.1.16.2.1, S:L84I, ORF1a:A4068S, China, from #2066
 GY.2	Alias of XBB.1.16.2.2, S:T883I
+GY.2.1	Alias of XBB.1.16.2.2.1, S:S255F, South Korea
 GY.3	Alias of XBB.1.16.2.3, S:M177I, Thailand
 XBB.1.16.3	Defined by A2893C, India
 XBB.1.16.4	Defined by S:T678I, India, from #1903
diff --git a/lineages.csv b/lineages.csv
index 620203f5..2b23b0f8 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2425580,28 +2425580,6 @@ England/PHEC-YYEZNW6/2023,GY.2
 India/UP-MRU-ICMR-35/2023,GY.2
 Canada/ON-PHL-23-25747/2023,GY.2
 Canada/ON-PHL-23-25891/2023,GY.2
-CHN/YNCDC-0584/2023,GY.2
-Singapore/R39MR49/2023,GY.2
-Singapore/R39MR48/2023,GY.2
-SouthKorea/KDCA241721/2023,GY.2
-SouthKorea/KDCA242726/2023,GY.2
-Singapore/R30MR61/2023,GY.2
-CHN/YNCDC-1159/2023,GY.2
-SouthKorea/KDCA241186/2023,GY.2
-Singapore/R33MR82/2023,GY.2
-SouthAfrica/CERI-KRISP-K055305/2023,GY.2
-Singapore/R21MR207/2023,GY.2
-CHN/XM2023042805/2023,GY.2
-Fujian/FCDC-XM042805/2023,GY.2
-SouthKorea/KDCA241404/2023,GY.2
-SouthKorea/KDCA241405/2023,GY.2
-USA/CA-GBW-H20-318-8676/2023,GY.2
-USA/CA-GBW-H10-012-3113/2023,GY.2
-Denmark/DCGC-646065/2023,GY.2
-Sweden/01_SE100_23CS501169/2023,GY.2
-USA/ND-NDDH-24264/2023,GY.2
-USA/MN-MDH-35608/2023,GY.2
-USA/WI-UW-15316/2023,GY.2
 Taiwan/CDC-F79071/2023,BN.1.2.7
 Taiwan/CDC-F79111/2023,BN.1.2.7
 Taiwan/CDC-F78618/2023,BN.1.2.7
@@ -2429929,3 +2429907,27 @@ Australia/ACT11645/2023,GY.3
 CHN/YNCDC-1432/2023,GY.3
 SouthKorea/KDCA239216/2023,GY.3
 France/IDF-IPP14598/2023,GY.3
+SouthAfrica/CERI-KRISP-K055305/2023,GY.2.1
+Singapore/R33MR82/2023,GY.2.1
+SouthKorea/KDCA241186/2023,GY.2.1
+CHN/YNCDC-1159/2023,GY.2.1
+Singapore/R42MR14/2023,GY.2.1
+CHN/YNCDC-1436/2023,GY.2.1
+Singapore/R30MR61/2023,GY.2.1
+SouthKorea/KDCA242726/2023,GY.2.1
+SouthKorea/KDCA241721/2023,GY.2.1
+Singapore/R39MR48/2023,GY.2.1
+Singapore/R39MR49/2023,GY.2.1
+Singapore/R21MR207/2023,GY.2.1
+CHN/YNCDC-0584/2023,GY.2.1
+CHN/XM2023042805/2023,GY.2.1
+Fujian/FCDC-XM042805/2023,GY.2.1
+SouthKorea/KDCA241404/2023,GY.2.1
+SouthKorea/KDCA241405/2023,GY.2.1
+USA/CA-GBW-H20-318-8676/2023,GY.2.1
+USA/CA-GBW-H10-012-3113/2023,GY.2.1
+Denmark/DCGC-646065/2023,GY.2.1
+Sweden/01_SE100_23CS501169/2023,GY.2.1
+USA/ND-NDDH-24264/2023,GY.2.1
+USA/MN-MDH-35608/2023,GY.2.1
+USA/WI-UW-15316/2023,GY.2.1