diff --git a/charts/maas/templates/etc/_curtin_userdata.tpl b/charts/maas/templates/etc/_curtin_userdata.tpl
index 414ea72..eeb6236 100644
--- a/charts/maas/templates/etc/_curtin_userdata.tpl
+++ b/charts/maas/templates/etc/_curtin_userdata.tpl
@@ -71,6 +71,9 @@ def find_ba_key(n):
   driver_06_depmod: ["curtin", "in-target", "--", "depmod"]
   driver_07_update_initramfs: ["curtin", "in-target", "--", "update-initramfs", "-u"]
 {{ "{{" }}endif{{ "}}" }}
+{{- range $k, $v := .Values.conf.curtin.late_commands }}
+{{ dict $k $v | toYaml | trim | indent 2 }}
+{{- end }}
 showtrace: true
 swap:
   size: 0
diff --git a/charts/maas/values.yaml b/charts/maas/values.yaml
index 3ed06c7..e6cc1a6 100644
--- a/charts/maas/values.yaml
+++ b/charts/maas/values.yaml
@@ -183,6 +183,15 @@ conf:
     append:
   curtin:
     override: true
+    late_commands: {}
+    # Additional commands to be run during the "late" curtin stage
+    #   https://curtin.readthedocs.io/en/latest/topics/config.html#stages
+    # When naming the keys, consider that the commands are executed in
+    # lexicographic order. The existing late_commands are named:
+    #   driver_NN_*, drydock_NN, and maas
+    # Example:
+    # late_commands:
+    #   install_modules_extra: ["curtin", "in-target", "--", "apt-get", "-y", "install", "linux-modules-extra-4.15.0-88-generic"]
   drydock:
     bootaction_url: null
   cache: