diff --git a/pkgs/by-name/li/libcss/package.nix b/pkgs/by-name/li/libcss/package.nix
index 30f8eb48e262..75c1edbe4f5c 100644
--- a/pkgs/by-name/li/libcss/package.nix
+++ b/pkgs/by-name/li/libcss/package.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "0.9.2";
 
   src = fetchurl {
-    url = "http://download.netsurf-browser.org/libs/releases/libcss-${finalAttrs.version}-src.tar.gz";
+    url = "https://download.netsurf-browser.org/libs/releases/libcss-${finalAttrs.version}-src.tar.gz";
     hash = "sha256-LfIVu+w01R1gwaBLAbLfTV0Y9RDx86evS4DN21ZxFU4=";
   };