diff --git a/docs/workflows/genomic_characterization/theiacov.md b/docs/workflows/genomic_characterization/theiacov.md
index 812ccc53d..3e2ad8956 100644
--- a/docs/workflows/genomic_characterization/theiacov.md
+++ b/docs/workflows/genomic_characterization/theiacov.md
@@ -558,7 +558,7 @@ The `organism_parameters` sub-workflow is the first step in all TheiaCoV workflo
         | nextclade_dataset_tag_input | flu | ha | yamagata | `"2024-01-30--16-34-55Z"` |  |
         | reference_genome | flu | ha | yamagata | `"gs://theiagen-public-files-rp/terra/flu-references/reference_yam_ha.fasta"` |  |
         | nextclade_dataset_name_input | flu | ha | h5n1 | `"community/moncla-lab/iav-h5/ha/all-clades"` |  |
-        | nextclade_dataset_tag_input | flu | ha | h5n1 | `"2024-05-08--11-39-52Z"` |  |
+        | nextclade_dataset_tag_input | flu | ha | h5n1 | `"2024-12-04--17-05-31Z"` |  |
         | reference_genome | flu | ha | h5n1 | `"gs://theiagen-public-files-rp/terra/flu-references/reference_h5n1_ha.fasta"` |  |
         | nextclade_dataset_name_input | flu | na | h1n1 | `"nextstrain/flu/h1n1pdm/na/MW626056"` |  |
         | nextclade_dataset_tag_input | flu | na | h1n1 | `"2024-11-05--09-19-52Z"` |  |
diff --git a/workflows/utilities/wf_organism_parameters.wdl b/workflows/utilities/wf_organism_parameters.wdl
index 65c513cb8..9e2b648fc 100644
--- a/workflows/utilities/wf_organism_parameters.wdl
+++ b/workflows/utilities/wf_organism_parameters.wdl
@@ -158,7 +158,7 @@ workflow organism_parameters {
         # H5N1 is a special case where the dataset used is the h5nx all clades dataset 
         String h5n1_ha_reference = "gs://theiagen-public-files-rp/terra/flu-references/reference_h5n1_ha.fasta"
         String h5n1_ha_reference_gbk = "gs://theiagen-public-files-rp/terra/flu-references/reference_h5n1_ha.gb"
-        String h5n1_ha_nextclade_ds_tag = "2024-05-08--11-39-52Z"
+        String h5n1_ha_nextclade_ds_tag = "2024-12-04--17-05-31Z"
         String h5n1_ha_nextclade_ds_name = "community/moncla-lab/iav-h5/ha/all-clades"
         String h5n1_ha_clades_tsv = "gs://theiagen-public-files-rp/terra/flu-references/h5nx-clades.tsv"
         String h5n1_ha_auspice_config = "gs://theiagen-public-files-rp/terra/flu-references/auspice_config_h5n1.json"