diff --git a/Formula/pngcrush.rb b/Formula/pngcrush.rb
index 7491ad7f3c..a51c1c2dd9 100644
--- a/Formula/pngcrush.rb
+++ b/Formula/pngcrush.rb
@@ -1,6 +1,6 @@
 class Pngcrush < Formula
   desc "Optimizer for PNG files"
-  homepage "http://pmt.sourceforge.net/pngcrush/"
+  homepage "https://pmt.sourceforge.io"
   url "https://downloads.sourceforge.net/project/pmt/pngcrush/1.8.11/pngcrush-1.8.11.tar.xz"
   sha256 "8d530328650ec82f3cbe998729ada8347eb3dbbdf706d9021c5786144d18f5b0"