diff --git a/Running-from-source.md b/Running-from-source.md
index b0ec83d..ad348f6 100644
--- a/Running-from-source.md
+++ b/Running-from-source.md
@@ -37,6 +37,7 @@ Arguments:
  -o FILE        write station outfitting data to FILE in CSV format
  -s FILE        write station shipyard data to FILE in CSV format
  -t FILE        write player status to FILE in CSV format
+ -d FILE        write raw JSON data to FILE
 ```
 
 The program returns one of the following exit codes. Further information may be written to stderr.