diff --git a/pkgs/by-name/ke/keyfuzz/package.nix b/pkgs/by-name/ke/keyfuzz/package.nix
index 68fe91b03093..0f4c29bee4d4 100644
--- a/pkgs/by-name/ke/keyfuzz/package.nix
+++ b/pkgs/by-name/ke/keyfuzz/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   };
 
   src = fetchurl {
-    url = "http://0pointer.de/lennart/projects/keyfuzz/keyfuzz-0.2.tar.gz";
+    url = "https://0pointer.de/lennart/projects/keyfuzz/keyfuzz-0.2.tar.gz";
     sha256 = "0xv9ymivp8fnyc5xcyh1vamxnx90bzw66wlld813fvm6q2gsiknk";
   };