diff --git a/lineage_notes.txt b/lineage_notes.txt
index c6f081b4..3a9d4f6a 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -3067,6 +3067,7 @@ XBB.1.16.19	ORF1b:V839I
 XBB.1.16.20	ORF7b:S31L
 XBB.1.16.21	ORF1a:V4072I
 XBB.1.16.22	ORF3a:E242Q, from #1893
+XBB.1.16.23	S:K304Q, India/USA/Japan/Singapore
 XBB.1.17	Defined by T27995C and ORF1a:L469F, from issue #1712
 XBB.1.17.1	Defined by S:215H, S:S486P, from issue #1712
 GA.1	Alias of XBB.1.17.1.1, ORF1a:G728C
diff --git a/lineages.csv b/lineages.csv
index fbb9378e..fb1d95f5 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2461816,3 +2461816,42 @@ PuertoRico/PR-I84244/2023,XBB.1.5.104
 PuertoRico/PR-I84265/2023,XBB.1.5.104
 PuertoRico/PR-I84291/2023,XBB.1.5.104
 USA/PR-CVL-015972/2023,XBB.1.5.104
+India/KA-RFNB-20135/2023,XBB.1.16.23
+Singapore/R25MR116/2023,XBB.1.16.23
+Singapore/R29MR225/2023,XBB.1.16.23
+USA/IN-CDC-QDX81456399/2023,XBB.1.16.23
+SouthKorea/KDCA245919/2023,XBB.1.16.23
+USA/CA-HLX-STM-AC78UHF9Y/2023,XBB.1.16.23
+USA/VA-VTVAS3-GSC43120/2023,XBB.1.16.23
+USA/NV-SNPHL-774722/2023,XBB.1.16.23
+USA/VA-VTVAS3-GSC43102/2023,XBB.1.16.23
+USA/CA-HLX-STM-7K88S2VF7/2023,XBB.1.16.23
+USA/AK-ANMC-0201/2023,XBB.1.16.23
+USA/2319948/2023,XBB.1.16.23
+USA/2319943/2023,XBB.1.16.23
+Japan/PG-550406/2023,XBB.1.16.23
+Japan/PG-536256/2023,XBB.1.16.23
+Japan/PG-551713/2023,XBB.1.16.23
+Japan/PG-548543/2023,XBB.1.16.23
+Japan/TKYnat14902/2023,XBB.1.16.23
+Japan/PG-557738/2023,XBB.1.16.23
+Japan/PG-556308/2023,XBB.1.16.23
+Japan/PG-560059/2023,XBB.1.16.23
+Japan/TKYnat14750/2023,XBB.1.16.23
+USA/NY-CDC-QDX83399286/2023,XBB.1.16.23
+USA/CA-HLX-STM-4KAVGQCXW/2023,XBB.1.16.23
+USA/CA-HLX-STM-39Q2D7GGH/2023,XBB.1.16.23
+Japan/PG-548587/2023,XBB.1.16.23
+Japan/PG-557045/2023,XBB.1.16.23
+USA/AZ-CDC-QDX83233027/2023,XBB.1.16.23
+Japan/TKYnat14749/2023,XBB.1.16.23
+Japan/TKYnat14460/2023,XBB.1.16.23
+Canada/BC-BCCDC-637957/2023,XBB.1.16.23
+Japan/PG-539270/2023,XBB.1.16.23
+USA/NY-URMC-N6S1I783-1/2023,XBB.1.16.23
+USA/TX-HMH-M-130539/2023,XBB.1.16.23
+Canada/ON-PHL-23-27139/2023,XBB.1.16.23
+Japan/PG-553114/2023,XBB.1.16.23
+Japan/PG-557064/2023,XBB.1.16.23
+Japan/TKYnat14413/2023,XBB.1.16.23
+Japan/PG-552878/2023,XBB.1.16.23