diff --git a/cwl/steps/extract_previews.cwl b/cwl/steps/extract_previews.cwl
index 3b19ed82716859ecf2690137f2bdf4aeae03684e..9d4dc6403012cc0c8a19861a861d54287f34d494 100644
--- a/cwl/steps/extract_previews.cwl
+++ b/cwl/steps/extract_previews.cwl
@@ -6,6 +6,9 @@ class: CommandLineTool
 requirements:
 - class: NetworkAccess
   networkAccess: true
+- class: InitialWorkDirRequirement
+  listing:
+  - entry: $(inputs.dynspec_dataset)
 
 inputs:
 - id: dynspec_dataset