diff --git a/lineage_notes.txt b/lineage_notes.txt
index 6b1f6204..4218c56e 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -2860,6 +2860,7 @@ GK.1.6	Alias of XBB.1.5.70.1.6, ORF3a:V50I, Colombia, from sars-cov-2-variants/l
 GK.1.6.1	Alias of XBB.1.5.70.1.6.1, S:A475V, ORF1a:I114V, Colombia, from sars-cov-2-variants/lineage-proposals#643
 GK.1.7	Alias of XBB.1.5.70.1.7, S:F186L, T11695C, Europe
 GK.1.8	Alias of XBB.1.5.70.1.8, S:E554K, S:A475V, Brazil
+GK.1.8.1	Alias of XBB.1.5.70.1.8.1, S:K187I, S:A222P, Brazil/Paraguay
 GK.1.9	Alias of XBB.1.5.70.1.9, C17010T, USA
 GK.1.10	Alias of XBB.1.5.70.1.10, Orf1a:I573V, Orf1a:T4129I, Orf9b:T95M, Brazil, from #2375
 GK.2	Alias of XBB.1.5.70.2, S:V511I, from sars-cov-2-variants/lineage-proposals#300
diff --git a/lineages.csv b/lineages.csv
index c4b6c92f..daa846c7 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2470348,7 +2470348,6 @@ Canada/ON-PHL-23-31768/2023,GK.1.7
 USA/NY-PRL-230915_83C05/2023,GK.1.7
 USA/NY-NYULH-16345/2023,GK.1.7
 USA/NY-NYULH-16230/2023,GK.1.7
-USA/NJ-GBW-H10-018-4100/2023,GK.1.8
 Brazil/SP-IAL-357312697/2023,GK.1.8
 Chile/MA-71053/2023,GK.1.8
 France/GES-IPP18330/2023,GK.1.8
@@ -2510446,3 +2510445,33 @@ USA/DE-DHSS-B1321515/2023,JN.1.3
 Switzerland/BE-IFIK-231204_os_19/2023,JN.1.3
 Switzerland/VD-CHUV-GEN18560/2023,JN.1.3
 Switzerland/ZH-UZH-IMV-3ba6bf81/2023,JN.1.3
+Brazil/PR-LACENPR-415442965/2023,GK.1.8.1
+Paraguay/LERAP_20-3/2023,GK.1.8.1
+Brazil/PR-LACENPR-415442942/2023,GK.1.8.1
+Paraguay/LERAP_23-3/2023,GK.1.8.1
+Paraguay/LERAP_43-3/2023,GK.1.8.1
+Brazil/PR-FIOCRUZ-10603/2023,GK.1.8.1
+Brazil/ES-LACENES-321454073/2023,GK.1.8.1
+USA/NJ-GBW-H10-018-4100/2023,GK.1.8.1
+Canada/AB-ABPHL-105456/2023,GK.1.8.1
+Canada/AB-ABPHL-105025/2023,GK.1.8.1
+Canada/NB-CHUDGLD-02L-MM00039R/2023,GK.1.8.1
+USA/VIEW-L3729645344266/2023,GK.1.8.1
+USA/DE-DHSS-B1321460/2023,GK.1.8.1
+Colombia/DC-INS-VG-31079/2023,GK.1.8.1
+Brazil/SC-FIOCRUZ-12316/2023,GK.1.8.1
+Brazil/SC-FIOCRUZ-11755/2023,GK.1.8.1
+Brazil/SC-FIOCRUZ-11827/2023,GK.1.8.1
+USA/MD-CDC-LC1069990/2023,GK.1.8.1
+USA/DE-DHSS-B1262107/2023,GK.1.8.1
+USA/TX-UHS-UTHSA9736-P0/2023,GK.1.8.1
+USA/DE-DHSS-B1321433/2023,GK.1.8.1
+USA/MD-DHSS-B1312027/2023,GK.1.8.1
+USA/NY-NYULH-17562/2023,GK.1.8.1
+England/CLIMB-CM7YJJNR/2023,GK.1.8.1
+USA/TX-UHS-UTHSA9648-P0/2023,GK.1.8.1
+USA/DE-DHSS-B1312034/2023,GK.1.8.1
+Sweden/N-2A784922523/2023,GK.1.8.1
+Sweden/O-14_SE300_DC23-006067/2023,GK.1.8.1
+Sweden/N-2A777489523/2023,GK.1.8.1
+Sweden/N-2A778124523/2023,GK.1.8.1