diff --git a/chord_metadata_service/chord/workflows/metadata.py b/chord_metadata_service/chord/workflows/metadata.py
index 81e416568..48a353e87 100644
--- a/chord_metadata_service/chord/workflows/metadata.py
+++ b/chord_metadata_service/chord/workflows/metadata.py
@@ -147,7 +147,7 @@ def boolean_input(id_: str, required: bool = True):
         wm.WorkflowFileArrayInput(
             id="document_files",
             required=True,
-            pattern=r"^.*\.(pdf|csv|tsv|txt|docx|xlsx|jpeg|jpg|png|gif|md|markdown|mp3|m4a|mp4)$",
+            pattern=r"^.*\.(pdf|csv|tsv|txt|docx|xlsx|jpeg|jpg|png|gif|md|markdown|html|mp3|m4a|mp4)$",
         ),
     ],
 ))
diff --git a/chord_metadata_service/experiments/schemas.py b/chord_metadata_service/experiments/schemas.py
index cad38f7c4..798a7decf 100644
--- a/chord_metadata_service/experiments/schemas.py
+++ b/chord_metadata_service/experiments/schemas.py
@@ -86,8 +86,8 @@
         "file_format": {
             "type": "string",
             "enum": ["SAM", "BAM", "CRAM", "VCF", "BCF", "MAF", "GVCF", "BigWig", "BigBed", "FASTA", "FASTQ", "TAB",
-                     "SRA", "SRF", "SFF", "GFF", "PDF", "CSV", "TSV", "JPEG", "PNG", "GIF", "MARKDOWN", "MP3", "M4A",
-                     "MP4", "DOCX", "XLS", "XLSX", "UNKNOWN", "OTHER"]
+                     "SRA", "SRF", "SFF", "GFF", "PDF", "CSV", "TSV", "JPEG", "PNG", "GIF", "HTML", "MARKDOWN",
+                     "MP3", "M4A", "MP4", "DOCX", "XLS", "XLSX", "UNKNOWN", "OTHER"]
         },
         "data_output_type": {
             "type": "string",