diff --git a/tidepool/src/mirrors/gnu.nix b/tidepool/src/mirrors/gnu.nix
index 45f2181..2ce05ee 100644
--- a/tidepool/src/mirrors/gnu.nix
+++ b/tidepool/src/mirrors/gnu.nix
@@ -4,7 +4,7 @@
     gnu = lib.options.create {
       description = "The GNU mirror to use";
       type = lib.types.string;
-      default.value = "https://ftp.gnu.org/gnu";
+      default.value = "https://ftpmirror.gnu.org/gnu";
     };
   };
 }