diff --git a/app/services/submit_envelope_download_workflow.rb b/app/services/submit_envelope_download_workflow.rb
index 24edd89a..e45e24b3 100644
--- a/app/services/submit_envelope_download_workflow.rb
+++ b/app/services/submit_envelope_download_workflow.rb
@@ -72,6 +72,7 @@ def parameters
       'destination-bucket' => ENV.fetch('ENVELOPE_DOWNLOADS_BUCKET'),
       'destination-prefix' => destination_prefix,
       'environment' => MR.env,
+      'max-input-files' => ENV.fetch('ARGO_WORKFLOWS_MAX_INPUT_FILES', '1'),
       'max-uncompressed-zip-size-bytes' => ENV.fetch(
         'ARGO_WORKFLOWS_MAX_UNCOMPRESSED_ZIP_SIZE_BYTES',
         (200 * 1024 * 1024).to_s
diff --git a/spec/services/submit_envelope_download_workflow_spec.rb b/spec/services/submit_envelope_download_workflow_spec.rb
index b86200ee..773e3859 100644
--- a/spec/services/submit_envelope_download_workflow_spec.rb
+++ b/spec/services/submit_envelope_download_workflow_spec.rb
@@ -12,6 +12,7 @@
     allow(ENV).to receive(:fetch).and_call_original
     allow(ENV).to receive(:fetch).with('ARGO_WORKFLOWS_TASK_IMAGE').and_return('registry:s3-graphs-zip')
     allow(ENV).to receive(:fetch).with('ARGO_WORKFLOWS_BATCH_SIZE', '25000').and_return('25000')
+    allow(ENV).to receive(:fetch).with('ARGO_WORKFLOWS_MAX_INPUT_FILES', '1').and_return('1')
     allow(ENV).to receive(:fetch)
       .with('ARGO_WORKFLOWS_MAX_UNCOMPRESSED_ZIP_SIZE_BYTES', '209715200')
       .and_return('209715200')
@@ -32,6 +33,7 @@
           'destination-bucket' => 'downloads-bucket',
           'destination-prefix' => "ce_registry/downloads/#{envelope_download.id}",
           'environment' => MR.env,
+          'max-input-files' => '1',
           'max-uncompressed-zip-size-bytes' => '209715200',
           'max-workers' => '4',
           'source-bucket' => 'graphs-bucket',