diff --git a/Formula/perceptualdiff.rb b/Formula/perceptualdiff.rb
index eaa404c016..5fb1e90f23 100644
--- a/Formula/perceptualdiff.rb
+++ b/Formula/perceptualdiff.rb
@@ -1,6 +1,6 @@
 class Perceptualdiff < Formula
   desc "Perceptual image comparison tool"
-  homepage "http://pdiff.sourceforge.net/"
+  homepage "https://pdiff.sourceforge.io/"
   url "https://downloads.sourceforge.net/project/pdiff/pdiff/perceptualdiff-1.1.1/perceptualdiff-1.1.1-src.tar.gz"
   sha256 "ab349279a63018663930133b04852bde2f6a373cc175184b615944a10c1c7c6a"