diff --git a/pkgs/by-name/ms/msr/package.nix b/pkgs/by-name/ms/msr/package.nix
index d03bda0f3798..766f355df9d4 100644
--- a/pkgs/by-name/ms/msr/package.nix
+++ b/pkgs/by-name/ms/msr/package.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   src = fetchzip {
     inherit pname version;
-    url = "http://www.etallen.com/msr/msr-${version}.src.tar.gz";
+    url = "https://www.etallen.com/msr/msr-${version}.src.tar.gz";
     hash = "sha256-e01qYWbOALkXp5NpexuVodMxA3EBySejJ6ZBpZjyT+E=";
   };