diff --git a/lisp/leim/quail/greek.el b/lisp/leim/quail/greek.el
index 7cf839f2f58..f2b68d17b13 100644
--- a/lisp/leim/quail/greek.el
+++ b/lisp/leim/quail/greek.el
@@ -1245,6 +1245,8 @@ e.g.
  ("K" ?Κ)
  ("L" ?Λ)
  (":" ?¨)
+ (";:" ?΅)
+ (":;" ?΅)
  ("\"" ?\")
  ("|" ?|)
  ("Z" ?Ζ)
@@ -1281,7 +1283,9 @@ e.g.
  (";:y" ?ΰ)
  (":;y" ?ΰ)
  (";<" ?«)
- (";>" ?»))
+ (";>" ?»)
+ ("<<" ?«)
+ (">>" ?»))
 
 (quail-define-package
  "greek-postfix" "GreekPost" "Ψ" nil