diff --git a/common.wdl b/common.wdl
index 379da32aa5d4b795960918ce488811e4a16013ce..d2198aff445a33f8e9a91deca5e67afb1f26ee3f 100644
--- a/common.wdl
+++ b/common.wdl
@@ -140,3 +140,13 @@ struct Reference {
     File fai
     File dict
 }
+
+struct IndexedVcfFile {
+    File file
+    File index
+}
+
+struct IndexedBamFile {
+    File file
+    File index
+}