diff --git a/Formula/postgis.rb b/Formula/postgis.rb
index 8ec24ef5d8..f2abbdcc91 100644
--- a/Formula/postgis.rb
+++ b/Formula/postgis.rb
@@ -1,7 +1,7 @@
 class Postgis < Formula
   desc "Adds support for geographic objects to PostgreSQL"
   homepage "https://postgis.net/"
-  url "http://download.osgeo.org/postgis/source/postgis-2.4.3.tar.gz"
+  url "https://download.osgeo.org/postgis/source/postgis-2.4.3.tar.gz"
   sha256 "ea5374c5db6b645ba5628ddcb08f71d3b3d90a464d366b4e1d20d5a268bde4b9"
 
   bottle do