diff --git a/defaults/clade_display_names.yml b/defaults/clade_display_names.yml
index ee35e9433..d43ec7643 100644
--- a/defaults/clade_display_names.yml
+++ b/defaults/clade_display_names.yml
@@ -47,4 +47,4 @@
 24G: 24G (KP.2.3)
 24H: 24H (LF.7)
 24I: 24I (MV.1)
-24J: 24J (LP.8.1)
+25A: 25A (LP.8.1)
diff --git a/defaults/clade_emergence_dates.tsv b/defaults/clade_emergence_dates.tsv
index 4f85afd54..317fb8a47 100644
--- a/defaults/clade_emergence_dates.tsv
+++ b/defaults/clade_emergence_dates.tsv
@@ -49,4 +49,4 @@ Nextstrain_clade	first_sequence
 24G	2024-01-01
 24H	2024-05-01
 24I	2024-05-01
-24J	2024-07-01
+25A	2024-07-01
diff --git a/defaults/clade_hierarchy.tsv b/defaults/clade_hierarchy.tsv
index b5119a81e..52b0ce59c 100644
--- a/defaults/clade_hierarchy.tsv
+++ b/defaults/clade_hierarchy.tsv
@@ -47,4 +47,4 @@ clade	parent	WHO
 24G	24B	Omicron
 24H	24A	Omicron
 24I	24A	Omicron
-24J	24B	Omicron
+25A	24B	Omicron
diff --git a/defaults/clades.tsv b/defaults/clades.tsv
index ce5f0053a..38244d053 100644
--- a/defaults/clades.tsv
+++ b/defaults/clades.tsv
@@ -267,8 +267,8 @@ clade	gene	site	alt
 24I	nuc	7393	T
 24I	nuc	22995	C
 
-24J	clade	24B
-24J	nuc	4999	T
-24J	nuc	22110	A
-24J	nuc	22132	T
-24J	nuc	25925	T
\ No newline at end of file
+25A	clade	24B
+25A	nuc	4999	T
+25A	nuc	22110	A
+25A	nuc	22132	T
+25A	nuc	25925	T
diff --git a/defaults/color_ordering.tsv b/defaults/color_ordering.tsv
index cc432baaa..ef743926b 100644
--- a/defaults/color_ordering.tsv
+++ b/defaults/color_ordering.tsv
@@ -34047,7 +34047,7 @@ clade_membership	24F (XEC)
 clade_membership	24G (KP.2.3)
 clade_membership	24H (LF.7)
 clade_membership	24I (MV.1)
-clade_membership	24J (LP.8.1)
+clade_membership	25A (LP.8.1)
 
 ################