diff --git a/lineage_notes.txt b/lineage_notes.txt
index 8a63391b..9a8620e6 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -2695,6 +2695,7 @@ XBB.1.30	Defined by ORF1b:K2557R, South East Asia
 XBB.1.31	Defined by S:453F and S:478R, Indonesia/Singapore
 XBB.1.32	Defined by ORF1a:E148D, Philippines
 XBB.1.33	Defined by S:A376T, found mainly in Italy, from pango-designation issue #1879
+XBB.1.34	Defined by S:681R, found mainly in USA and UK, from pango-designation issue #1621
 XBB.2	Defined by S:D253G, from issue #1173
 XBB.2.1	Defined by S:N764R (C23853G), two step mutation on top of C23854A (S:N764K defining of all Omicrons)
 XBB.2.2	Defined by S:Q613H
diff --git a/lineages.csv b/lineages.csv
index fa36ddf1..be08f6af 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2366350,3 +2366350,36 @@ France/GES-IPP07820/2023,XBB.2.3
 France/OCC-HCL723000333101/2023,XBB.2.3
 France/GES-IPP08609/2023,XBB.2.3
 France/GES-IPP06926/2023,XBB.2.3
+England/PHEC-YYEOT4T/2023,XBB.1.34
+Denmark/DCGC-645014/2023,XBB.1.34
+USA/NY-PRL-02_81C05/2023,XBB.1.34
+USA/NY-NYULH-P-14311/2023,XBB.1.34
+Australia/WA11887/2023,XBB.1.34
+France/IDF-IPP07446/2023,XBB.1.34
+Canada/AB-ABPHL-95251/2023,XBB.1.34
+Denmark/DCGC-645409/2023,XBB.1.34
+Australia/WA12419/2023,XBB.1.34
+Singapore/R8MR47/2023,XBB.1.34
+Australia/NSW-ICPMR-43307/2023,XBB.1.34
+Canada/BC-BCCDC-604264/2023,XBB.1.34
+France/ARA-HCL-723000347301/2023,XBB.1.34
+Sudan/BC64_04032023/2023,XBB.1.34
+USA/CT-DPH-1140724001/2023,XBB.1.34
+Canada/AB-ABPHL-94718/2023,XBB.1.34
+USA/VA-CDC-QDX48365448/2023,XBB.1.34
+Singapore/R19MR23/2023,XBB.1.34
+USA/VA-CDC-QDX45592243/2023,XBB.1.34
+England/QEUH-326D4B23/2023,XBB.1.34
+England/PHEC-YYEPXDJ/2023,XBB.1.34
+USA/MD-CDC-QDX46775573/2023,XBB.1.34
+Sweden/01_SE100_23CS100821/2023,XBB.1.34
+England/QEUH-32700D18/2023,XBB.1.34
+India/WB-1930302175102/2023,XBB.1.34
+Denmark/DCGC-645319/2023,XBB.1.34
+USA/MD-HP45212-PIDEIIMVUF/2023,XBB.1.34
+England/PHEC-YYEK1ZD/2023,XBB.1.34
+England/PHEC-YYEX4O9/2023,XBB.1.34
+England/PHEC-YYEXJYT/2023,XBB.1.34
+Israel/SMC-7112051/2023,XBB.1.34
+England/QEUH-326D4C20/2023,XBB.1.34
+France/IDF-IPP07447/2023,XBB.1.34