diff --git a/roles/40cu/tasks/main.yml b/roles/40cu/tasks/main.yml
new file mode 100644
index 0000000..65795d0
--- /dev/null
+++ b/roles/40cu/tasks/main.yml
@@ -0,0 +1,20 @@
+# The custom `linux-cachyos-bc250` brings in the 40CU patch
+- name: Enable the 40 CU unlock
+  become: true
+  ansible.builtin.copy:
+    content: "options amdgpu bc250_cc_write_mode=3\n"
+    dest: /etc/modprobe.d/bc250-40cu.conf
+    mode: '0644'
+  register: cu40_conf
+
+- name: Rebuild initramfs
+  become: true
+  ansible.builtin.command: limine-mkinitcpio
+  when: cu40_conf.changed
+  changed_when: true
+
+- name: Reboot to reinitialise amdgpu
+  become: true
+  ansible.builtin.reboot:
+    reboot_timeout: 600
+  when: cu40_conf.changed
diff --git a/site.yml b/site.yml
index c07388c..2a74199 100644
--- a/site.yml
+++ b/site.yml
@@ -11,3 +11,5 @@
       role: gpu_governor
     - name: Install Mesa
       role: mesa
+    - name: Enable 40CU
+      role: 40cu