diff --git a/sys-boot/grub/grub-2.12-r6.ebuild b/sys-boot/grub/grub-2.12-r6.ebuild
index c358e5b77e404..8931d754a9a26 100644
--- a/sys-boot/grub/grub-2.12-r6.ebuild
+++ b/sys-boot/grub/grub-2.12-r6.ebuild
@@ -17,7 +17,7 @@ EAPI=7
 # corresponding variable in make.conf or the environment.
 
 GRUB_AUTORECONF=1
-PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_COMPAT=( python3_{10..13} )
 WANT_LIBTOOL=none
 VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/dkiper.gpg
 
diff --git a/sys-boot/grub/grub-9999.ebuild b/sys-boot/grub/grub-9999.ebuild
index bc38050aff47b..c1574de8add7f 100644
--- a/sys-boot/grub/grub-9999.ebuild
+++ b/sys-boot/grub/grub-9999.ebuild
@@ -21,7 +21,7 @@ if [[ ${PV} == 9999  ]]; then
 	GRUB_BOOTSTRAP=1
 fi
 
-PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_COMPAT=( python3_{10..13} )
 WANT_LIBTOOL=none
 VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/dkiper.gpg