diff --git a/etc/default/grub.d/40_kernel_hardening.cfg b/etc/default/grub.d/40_kernel_hardening.cfg
index e456416..6bdbff2 100644
--- a/etc/default/grub.d/40_kernel_hardening.cfg
+++ b/etc/default/grub.d/40_kernel_hardening.cfg
@@ -53,3 +53,9 @@ fi
 #if dpkg --compare-versions "${kver}" ge "5.4"; then
 #  GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX lockdown=confidentiality"
 #fi
+
+## Gather more entropy during boot.
+##
+## Requires linux-hardened kernel patch.
+## https://github.com/anthraxx/linux-hardened
+GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX extra_latent_entropy"