diff --git a/wdl/postprocess.wdl b/wdl/postprocess.wdl
index da1750b..93c7b6d 100755
--- a/wdl/postprocess.wdl
+++ b/wdl/postprocess.wdl
@@ -5,6 +5,7 @@ task run_post {
     String?  msi
     String? hereditary
     String? chemo
+    String? pollution
     String name
     String? normal
     String output_dir