diff --git a/.github/workflows/requirements2png.yml b/.github/workflows/requirements2png.yml
index a132e12..f12e0c3 100644
--- a/.github/workflows/requirements2png.yml
+++ b/.github/workflows/requirements2png.yml
@@ -31,5 +31,5 @@ jobs:
         uses: ad-m/github-push-action@master
         with:
           directory: ${{ github.repository }}
-          force: yes
+          force: true
           branch: png
diff --git a/.yamllint b/.yamllint
index 10d5946..cc50726 100644
--- a/.yamllint
+++ b/.yamllint
@@ -11,9 +11,6 @@ rules:
   line-length: disable
   truthy:
     check-keys: no
-    allowed-values:
-      - "yes"
-      - "no"
 
 ignore: |
   .tox/
diff --git a/README.md b/README.md
index 6880881..fcbd123 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,8 @@ This example is taken from [`molecule/default/converge.yml`](https://github.com/
 ---
 - name: Converge
   hosts: all
-  become: yes
-  gather_facts: yes
+  become: true
+  gather_facts: true
 
   roles:
     - role: robertdebock.umask
@@ -28,8 +28,8 @@ The machine needs to be prepared. In CI this is done using [`molecule/default/pr
 ---
 - name: Prepare
   hosts: all
-  become: yes
-  gather_facts: no
+  become: true
+  gather_facts: false
 
   roles:
     - role: robertdebock.bootstrap
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index 43088cc..f7f76ee 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -1,8 +1,8 @@
 ---
 - name: Converge
   hosts: all
-  become: yes
-  gather_facts: yes
+  become: true
+  gather_facts: true
 
   roles:
     - role: ansible-role-umask
diff --git a/molecule/default/prepare.yml b/molecule/default/prepare.yml
index f76c7bf..3687735 100644
--- a/molecule/default/prepare.yml
+++ b/molecule/default/prepare.yml
@@ -1,8 +1,8 @@
 ---
 - name: Prepare
   hosts: all
-  become: yes
-  gather_facts: no
+  become: true
+  gather_facts: false
 
   roles:
     - role: robertdebock.bootstrap
diff --git a/molecule/default/verify.yml b/molecule/default/verify.yml
index d4eaf16..d2463f6 100644
--- a/molecule/default/verify.yml
+++ b/molecule/default/verify.yml
@@ -1,14 +1,14 @@
 ---
 - name: Verify
   hosts: all
-  become: yes
-  gather_facts: yes
+  become: true
+  gather_facts: true
 
   tasks:
     - name: Check umask
       ansible.builtin.shell:
         cmd: ". /root/.bashrc && umask"
-      changed_when: no
+      changed_when: false
       register: umask_check_umask
       failed_when:
         - umask_check_umask.stdout != "0027"
diff --git a/tasks/assert.yml b/tasks/assert.yml
index d28003b..1bd0351 100644
--- a/tasks/assert.yml
+++ b/tasks/assert.yml
@@ -6,11 +6,11 @@
       - umask is defined
       - umask is string
       - umask is not none
-    quiet: yes
+    quiet: true
 
 - name: assert | Test umask_users
   ansible.builtin.assert:
     that:
       - umask_users is defined
       - umask_users is iterable
-    quiet: yes
+    quiet: true
diff --git a/tasks/main.yml b/tasks/main.yml
index 9d61226..312c2fc 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -4,7 +4,7 @@
 - name: Import assert.yml
   ansible.builtin.import_tasks:
     file: assert.yml
-  run_once: yes
+  run_once: true
   delegate_to: localhost
 
 - name: Set umask
@@ -12,8 +12,8 @@
     path: ~/.bashrc
     line: "umask {{ umask }}"
     regexp: '^umask\s+\d+'
-    create: yes
+    create: true
     mode: "0644"
-  become: yes
+  become: true
   become_user: "{{ item }}"
   loop: "{{ umask_users }}"