diff --git a/Formula/regex-opt.rb b/Formula/regex-opt.rb
index 435036ee95..62dc73993c 100644
--- a/Formula/regex-opt.rb
+++ b/Formula/regex-opt.rb
@@ -1,7 +1,7 @@
 class RegexOpt < Formula
   desc "Perl-compatible regular expression optimizer"
-  homepage "http://bisqwit.iki.fi/source/regexopt.html"
-  url "http://bisqwit.iki.fi/src/arch/regex-opt-1.2.4.tar.gz"
+  homepage "https://bisqwit.iki.fi/source/regexopt.html"
+  url "https://bisqwit.iki.fi/src/arch/regex-opt-1.2.4.tar.gz"
   sha256 "128c8ba9570b1fd8a6a660233de2f5a4022740bc5ee300300709c3894413883f"
 
   bottle do