diff --git a/config/install/system.menu.localgov_services_menu.yml b/config/install/system.menu.localgov-services-menu.yml
similarity index 80%
rename from config/install/system.menu.localgov_services_menu.yml
rename to config/install/system.menu.localgov-services-menu.yml
index 5e1cd92..fe202cb 100644
--- a/config/install/system.menu.localgov_services_menu.yml
+++ b/config/install/system.menu.localgov-services-menu.yml
@@ -1,7 +1,7 @@
 langcode: en
 status: true
 dependencies: {  }
-id: localgov_services_menu
+id: localgov-services-menu
 label: 'Services menu'
 description: 'Service links'
 locked: false
diff --git a/config/optional/block.block.localgov_servicesmenu_base.yml b/config/optional/block.block.localgov_servicesmenu_base.yml
index db18121..e740fa2 100644
--- a/config/optional/block.block.localgov_servicesmenu_base.yml
+++ b/config/optional/block.block.localgov_servicesmenu_base.yml
@@ -2,7 +2,7 @@ langcode: en
 status: true
 dependencies:
   config:
-    - system.menu.localgov_services_menu
+    - system.menu.localgov-services-menu
   module:
     - system
   theme:
@@ -12,9 +12,9 @@ theme: localgov_base
 region: secondary_menu
 weight: -6
 provider: null
-plugin: 'system_menu_block:localgov_services_menu'
+plugin: 'system_menu_block:localgov-services-menu'
 settings:
-  id: 'system_menu_block:localgov_services_menu'
+  id: 'system_menu_block:localgov-services-menu'
   label: 'Services menu'
   provider: system
   label_display: '0'
diff --git a/config/optional/block.block.localgov_servicesmenu_scarfolk.yml b/config/optional/block.block.localgov_servicesmenu_scarfolk.yml
index 5a17ffc..2764ebc 100644
--- a/config/optional/block.block.localgov_servicesmenu_scarfolk.yml
+++ b/config/optional/block.block.localgov_servicesmenu_scarfolk.yml
@@ -2,7 +2,7 @@ langcode: en
 status: true
 dependencies:
   config:
-    - system.menu.localgov_services_menu
+    - system.menu.localgov-services-menu
   module:
     - system
   theme:
@@ -12,9 +12,9 @@ theme: localgov_scarfolk
 region: secondary_menu
 weight: -6
 provider: null
-plugin: 'system_menu_block:localgov_services_menu'
+plugin: 'system_menu_block:localgov-services-menu'
 settings:
-  id: 'system_menu_block:localgov_services_menu'
+  id: 'system_menu_block:localgov-services-menu'
   label: 'Services menu'
   provider: system
   label_display: '0'
diff --git a/localgov_services.install b/localgov_services.install
new file mode 100644
index 0000000..abb688f
--- /dev/null
+++ b/localgov_services.install
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @file
+ * Install functions for LocalGov Services.
+ */
+
+/**
+ * Update localgov_services_menu machine name to use hypens.
+ */
+function localgov_services_update_10001(): void {
+
+  // Check if an existing new menu exists, assume it was renamed already.
+  $existing = \Drupal::entityTypeManager()->getStorage('menu')->load('localgov-services-menu');
+  if ($existing) {
+    return;
+  }
+
+  // Create the new hyphen seperated localgov-services-menu.
+  \Drupal::entityTypeManager()->getStorage('menu')
+    ->create([
+      'langcode' => 'en',
+      'status' => TRUE,
+      'id' => 'localgov-services-menu',
+      'label' => 'Services menu',
+      'description' => 'Service links',
+      'locked' => FALSE,
+    ])->save();
+
+  // Load existing menu link content items.
+  $items = \Drupal::entityTypeManager()->getStorage('menu_link_content')->loadByProperties([
+    'menu_name' => 'localgov_services_menu',
+  ]);
+
+  // Update current menu link content items to point to the new menu.
+  foreach ($items as $item) {
+    $new_item = $item->createDuplicate();
+    $new_item->set('menu_name', 'localgov-services-menu')->save();
+  }
+
+  // Label as the old underscores seperated localgov_services_menu.
+  \Drupal::entityTypeManager()
+    ->getStorage('menu')
+    ->load('localgov_services_menu')
+    ->set('label', 'Services menu (Old)')
+    ->set('description', 'Old Service links with broken machine name. Delete this menu once you replace your services menu blocks.')
+    ->save();
+
+}