diff --git a/ox-hugo.el b/ox-hugo.el
index 44f2e16..d1f9768 100644
--- a/ox-hugo.el
+++ b/ox-hugo.el
@@ -2939,6 +2939,9 @@ are \"toml\" and \"yaml\"."
                      "HUGO_LOCALE"
                      "HUGO_PAIRED_SHORTCODES"
                      "DATE" ;Useful for inheriting same date to same posts in different languages
+                     "HUGO_PUBLISHDATE"
+                     "HUGO_EXPIRYDATE"
+                     "HUGO_LASTMOD"
                      "HUGO_SLUG" ;Useful for inheriting same slug to same posts in different languages
                      "HUGO_AUTO_SET_LASTMOD")))
     (mapcar (lambda (str)