diff --git a/pkgs/applications/window-managers/ion-3/default.nix b/pkgs/applications/window-managers/ion-3/default.nix
index 4794de1d5f84..bce66ef53fb9 100644
--- a/pkgs/applications/window-managers/ion-3/default.nix
+++ b/pkgs/applications/window-managers/ion-3/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "3-20090110";
 
   src = fetchurl {
-    url = "http://tuomov.iki.fi/software/dl/ion-${version}.tar.gz";
+    url = "https://tuomov.iki.fi/software/ion/dl/ion-${version}.tar.gz";
     sha256 = "1nkks5a95986nyfkxvg2rik6zmwx0lh7szd5fji7yizccwzc9xns";
   };