diff --git a/pkgs/by-name/fo/fondu/package.nix b/pkgs/by-name/fo/fondu/package.nix
index f4094ef60f69..984600836a62 100644
--- a/pkgs/by-name/fo/fondu/package.nix
+++ b/pkgs/by-name/fo/fondu/package.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "fondu";
 
   src = fetchurl {
-    url = "http://fondu.sourceforge.net/fondu_src-${finalAttrs.version}.tgz";
+    url = "https://fondu.sourceforge.net/fondu_src-${finalAttrs.version}.tgz";
     sha256 = "152prqad9jszjmm4wwqrq83zk13ypsz09n02nrk1gg0fcxfm7fr2";
   };