diff --git a/pkgs/mfix/mfixgui.nix b/pkgs/mfix/mfixgui.nix
index ae2df35..cb2a4e9 100644
--- a/pkgs/mfix/mfixgui.nix
+++ b/pkgs/mfix/mfixgui.nix
@@ -8,7 +8,7 @@ buildPythonApplication rec {
 
   srcs = [
     ( fetchurl {
-        url = "https://www.sharcnet.ca/~tyson/nix/mfix-${version}.tar.gz";
+        url = "https://staff.sharcnet.ca/~tyson/nix/mfix-${version}.tar.gz";
         sha256 = "1bnwvgmrmz9y32fsnnqb4x2ab4yh9iyg1d7f3wc2w6q9fsfnzpj4";
     } )
     ( fetchFromGitHub {
diff --git a/pkgs/mfix/mfixsolver.nix b/pkgs/mfix/mfixsolver.nix
index d79ec73..b9be05d 100644
--- a/pkgs/mfix/mfixsolver.nix
+++ b/pkgs/mfix/mfixsolver.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
 
   srcs = [
     ( fetchurl {
-        url = "https://www.sharcnet.ca/~tyson/nix/mfix-${version}.tar.gz";
+        url = "https://staff.sharcnet.ca/~tyson/nix/mfix-${version}.tar.gz";
         sha256 = "1bnwvgmrmz9y32fsnnqb4x2ab4yh9iyg1d7f3wc2w6q9fsfnzpj4";
     } )
     ( fetchFromGitHub {