diff --git a/pkgs/by-name/do/docbook2mdoc/package.nix b/pkgs/by-name/do/docbook2mdoc/package.nix
index cb3b9f3b16e8..eee92685f463 100644
--- a/pkgs/by-name/do/docbook2mdoc/package.nix
+++ b/pkgs/by-name/do/docbook2mdoc/package.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation (finalAttrs: {
   version = "0.0.9";
 
   src = fetchurl {
-    url = "http://mdocml.bsd.lv/docbook2mdoc/snapshots/docbook2mdoc-${finalAttrs.version}.tgz";
+    url = "https://mdocml.bsd.lv/docbook2mdoc/snapshots/docbook2mdoc-${finalAttrs.version}.tgz";
     sha256 = "07il80sg89xf6ym4bry6hxdacfzqgbwkxzyf7bjaihmw5jj0lclk";
   };