diff --git a/getting_started/setup_vm/roles/ccf_build/tasks/install.yml b/getting_started/setup_vm/roles/ccf_build/tasks/install.yml
index 462dd2afb4cd..f424d7676629 100644
--- a/getting_started/setup_vm/roles/ccf_build/tasks/install.yml
+++ b/getting_started/setup_vm/roles/ccf_build/tasks/install.yml
@@ -57,3 +57,9 @@
   args:
     chdir: "{{ workspace }}/doxygen-{{ doxygen_ver }}"
   become: true
+
+- name: Install cddl checker
+  gem:
+    name: cddl
+    state: present
+  become: yes