diff --git a/core/grub/sources b/core/grub/sources
index ef4803a2..3c08ed68 100644
--- a/core/grub/sources
+++ b/core/grub/sources
@@ -1,2 +1,2 @@
-ftp://ftp.gnu.org/gnu/grub/grub-2.04.tar.xz grub/
+https://ftp.gnu.org/gnu/grub/grub-2.04.tar.xz grub/
 files/grub.default