diff --git a/tasks/all/main.yml b/tasks/all/main.yml
index c839b30..225510b 100644
--- a/tasks/all/main.yml
+++ b/tasks/all/main.yml
@@ -21,6 +21,10 @@
   ansible.builtin.import_tasks:
     file: tasks/all/timezone.yml
 
+- name: "Common / Set Locale"
+  ansible.builtin.import_tasks:
+    file: tasks/all/set-locale.yml
+
 - name: "Common / Put authorized Key for hayato"
   ansible.builtin.import_tasks:
     file: tasks/all/authorized_keys.yml
diff --git a/tasks/all/set-locale.yml b/tasks/all/set-locale.yml
new file mode 100644
index 0000000..9d3e14e
--- /dev/null
+++ b/tasks/all/set-locale.yml
@@ -0,0 +1,14 @@
+---
+- name: "Install software-properties-common"
+  ansible.builtin.apt:
+    name: "{{ item }}"
+    state: present
+    update_cache: true
+  loop:
+    - locales-all
+    - language-pack-en
+
+- name: "Set locale as en_US.UTF-8"
+  community.general.locale_gen:
+    name: "en_US.UTF-8"
+    state: present