diff --git a/tools/metadata-calculation.sh b/tools/metadata-calculation.sh
index a4679a1b..55357d60 100755
--- a/tools/metadata-calculation.sh
+++ b/tools/metadata-calculation.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+# Requires installing stream-commp
+# go install github.com/filecoin-project/go-fil-commp-hashhash/cmd/stream-commp@latest
+
 set -o pipefail
 set -e