diff --git a/README b/README
index b31f224..b960988 100644
--- a/README
+++ b/README
@@ -87,6 +87,8 @@ Environment variables
 
   PASSAGE_DIR               Password store location
 
+  PASSAGE_EXTENSIONS_DIR    Extensions location
+
   PASSAGE_IDENTITIES_FILE   Identities file location
 
   PASSAGE_AGE               age binary (tested with age and rage)