diff --git a/README.md b/README.md
index 8d0434a..c63f69e 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ gitlab_ci_runner::runner_defaults:
   url: "https://git.example.com/ci"
   registration-token: "1234567890abcdef"
   executor: "docker"
-  docker-image: "ubuntu:trusty"
+  docker-image: "ubuntu:focal"
   builds_dir: "/tmp"
   cache_dir: "/tmp"
 ```
diff --git a/manifests/init.pp b/manifests/init.pp
index 532a105..aa64af2 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -68,9 +68,9 @@
     ensure_packages($xz_package_name)
 
     $docker_images = {
-      ubuntu_trusty => {
+      ubuntu_focal => {
         image     => 'ubuntu',
-        image_tag => 'trusty',
+        image_tag => 'focal',
       },
     }
 
diff --git a/spec/classes/gitlab_ci_runner_spec.rb b/spec/classes/gitlab_ci_runner_spec.rb
index 7ced2b4..4c5bdd0 100644
--- a/spec/classes/gitlab_ci_runner_spec.rb
+++ b/spec/classes/gitlab_ci_runner_spec.rb
@@ -184,9 +184,9 @@
             is_expected.to contain_class('docker::images').
               with(
                 images: {
-                  'ubuntu_trusty' => {
+                  'ubuntu_focal' => {
                     'image'     => 'ubuntu',
-                    'image_tag' => 'trusty'
+                    'image_tag' => 'focal'
                   }
                 }
               )