diff --git a/Formula/abook.rb b/Formula/abook.rb
index e68d8180b8a..fcbd29f234c 100644
--- a/Formula/abook.rb
+++ b/Formula/abook.rb
@@ -1,6 +1,6 @@
 class Abook < Formula
   desc "Address book with mutt support"
-  homepage "http://abook.sourceforge.net/"
+  homepage "https://abook.sourceforge.io/"
   url "https://downloads.sourceforge.net/project/abook/abook/0.5.6/abook-0.5.6.tar.gz"
   sha256 "0646f6311a94ad3341812a4de12a5a940a7a44d5cb6e9da5b0930aae9f44756e"
   revision 1