diff --git a/.config/guix/system/default.scm b/.config/guix/system/default.scm
index 3c5964ed..8d4ef318 100644
--- a/.config/guix/system/default.scm
+++ b/.config/guix/system/default.scm
@@ -97,6 +97,9 @@ StrictNodes 1")
     (timezone "Europe/Paris")
     (locale "en_US.utf8")
 
+    ;; TODO: Remove this once everything has been rebuilt using 2.29.
+    (locale-libcs (list glibc-2.28 (canonical-package glibc)))
+
     ;; Use the UEFI variant of GRUB with the EFI System
     ;; Partition mounted on /boot/efi.
     (bootloader (bootloader-configuration