diff --git a/website/api/cli.jade b/website/api/cli.jade
index 85a13c3c0..a34271d81 100644
--- a/website/api/cli.jade
+++ b/website/api/cli.jade
@@ -533,8 +533,10 @@ p
         +cell option
         +cell
             |  Optional location of vectors file. Should be a tab-separated
-            |  file where the first column contains the word and the remaining
-            |  columns the values.
+            |  file in Word2Vec format where the first column contains the word
+            |  and the remaining columns the values. File can be provided in
+            |  #[code .txt] format or as a zipped text file in #[code .zip] or
+            |  #[code .tar.gz] format.
 
     +row
         +cell #[code --prune-vectors], #[code -V]