diff --git a/lineage_notes.txt b/lineage_notes.txt
index 66b633d4..069d8962 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -3777,6 +3777,7 @@ XDK	Recombinant lineage of XBB.1.16.11 (likely) and JN.1.1.1 (breakpoint between
 XDL	Recombinant lineage of EG.5.1.1 and non-EG.5 (breakpoint between 25573-29624) with S:L455F and S:I1114T, China, from #2351
 XDM	Recombinant lineage of XDA, GW.5, XDA (breakpoints between 22107-22926 and 24047-25838), from sars-cov-2-variants/lineage-proposals#1163
 XDN	Recombinant lineage of JN.1.1 and JD.1 (breakpoint between 24379 and 24989), from #2448
+XDP	Recombinant lineage of JN.1.4 and FL.15 (breakpoint between 26834 and 27809), from #2451
 *A.2.1	Withdrawn: Lineage with sequences predominantly from Panama
 *A.8	Withdrawn: Indian lineage merged with A.9
 *A.10	Withdrawn: Spanish lineage reassigned to A.5
diff --git a/lineages.csv b/lineages.csv
index 0b71a5cb..14882f58 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2518380,3 +2518380,44 @@ England/CLIMB-CM7YFO8C/2023,XDN
 Wales/CLIMB-CM7YGFC4/2023,XDN
 Wales/CLIMB-CM7Y8U5A/2024,XDN
 Wales/CLIMB-CM7YRZ8C/2024,XDN
+USA/CA-CDPH-6000017864/2023,XDP
+USA/PA-CDC-QDX90677855/2023,XDP
+USA/OH-ODH-SC3033489/2023,XDP
+USA/CA-HLX-STM-4WT7QP56U/2023,XDP
+USA/CA-CDPH-500128839/2023,XDP
+USA/NV-USAFSAM-S21975/2023,XDP
+USA/NY-CDC-QDX90630814/2023,XDP
+USA/CA-CDC-QDX90730336/2023,XDP
+Canada/ON-PHL-202401464/2024,XDP
+USA/NV-USAFSAM-S21921/2023,XDP
+USA/NY-NYULH-17954/2024,XDP
+USA/CA-MCPHL-G2300177/2023,XDP
+USA/CA-KP000005/2024,XDP
+USA/UT-UPHL-231221143732/2023,XDP
+USA/MN-MDH-39521/2023,XDP
+USA/MI-MDHHS-SC44959/2023,XDP
+USA/UT-UPHL-231221955487/2023,XDP
+USA/NV-CDC-QDX90528447/2023,XDP
+Canada/ON-PHL-23-49807/2023,XDP
+Canada/ON-PHL-23-49817/2023,XDP
+USA/IL-CWGS3442/2023,XDP
+USA/IL-C23WGS3682/2023,XDP
+USA/NY-SUNYQB-X7844/2023,XDP
+USA/NY-CDC-QDX90257796/2023,XDP
+USA/NY-SUNYQB-X7878/2023,XDP
+USA/NJ-CDC-QDX90145437/2023,XDP
+USA/IL-CDC-QDX90528578/2023,XDP
+USA/IL-CDC-LC1077594/2023,XDP
+USA/CA-HLX-STM-F72CPZYJ5/2023,XDP
+USA/CA-KP000114/2024,XDP
+USA/CA-HLX-STM-NGP8KRTT9/2023,XDP
+USA/CA-HLX-STM-768UMP7C3/2023,XDP
+USA/CA-HLX-STM-TMV95PJUP/2023,XDP
+USA/CA-HLX-STM-WEN6NUX37/2023,XDP
+USA/MN-CDC-VSX-A14023/2023,XDP
+Canada/ON-PHL-202402112/2024,XDP
+USA/NY-SUNYQB-X7814/2023,XDP
+USA/NY-SUNYQB-X7797/2023,XDP
+USA/NY-SUNYQB-X7704/2023,XDP
+USA/NY-SUNYQB-X7673/2023,XDP
+USA/NY-SUNYQB-X7608/2023,XDP
diff --git a/pango_designation/alias_key.json b/pango_designation/alias_key.json
index 62a91870..853b23dc 100644
--- a/pango_designation/alias_key.json
+++ b/pango_designation/alias_key.json
@@ -338,6 +338,7 @@
     "XDK": ["XBB.1.16.11","JN.1.1.1"],
     "XDL": ["EG.5.1.1","XBB*"],
     "XDM": ["XDA","GW.5","XDA"],
-    "XDN": ["JN.1.1","JD.1*"]
+    "XDN": ["JN.1.1","JD.1*"],
+    "XDP": ["JN.1.4","FL.15"]
 }