diff --git a/mkosi.conf.d/arch/mkosi.extra/etc/locale.gen b/mkosi.conf.d/arch/mkosi.extra/etc/locale.gen
new file mode 100644
index 00000000..a66d8148
--- /dev/null
+++ b/mkosi.conf.d/arch/mkosi.extra/etc/locale.gen
@@ -0,0 +1 @@
+en_US.UTF-8 UTF-8
diff --git a/mkosi.conf.d/arch/mkosi.postinst.chroot b/mkosi.conf.d/arch/mkosi.postinst.chroot
new file mode 100755
index 00000000..038bc010
--- /dev/null
+++ b/mkosi.conf.d/arch/mkosi.postinst.chroot
@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+
+# Generate locales
+locale-gen