diff --git a/README.rst b/README.rst
index a3c75948..18ac6637 100644
--- a/README.rst
+++ b/README.rst
@@ -108,7 +108,7 @@ Set to true to launch an instance before starting upgrade. This can be useful fo
 
 Name of the external network providing floating IPs for instance connectivity. This provides external connectivity and needs to exist beforehand, created by the user::
 
-    workload_image_url: "https://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img"
+    workload_image_url: "https://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img"
 
 URL of the image used for the workload instance::
 
diff --git a/defaults/main.yml b/defaults/main.yml
index d50aa13c..b9670891 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -58,7 +58,7 @@ launch_sanity_workload: true
 # launch workload before update/upgrade
 workload_launch: false
 external_network_name: "public"
-workload_image_url: "https://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img"
+workload_image_url: "https://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img"
 workload_memory: "512"
 workload_user: "cirros"
 workload_disk: 5
diff --git a/infrared_plugin/plugin.spec b/infrared_plugin/plugin.spec
index 5b47e3ac..ffe1c925 100644
--- a/infrared_plugin/plugin.spec
+++ b/infrared_plugin/plugin.spec
@@ -54,7 +54,7 @@ subparsers:
                       type: Value
                       help: |
                           Image URL to be used for spawning instance before upgrade.
-                      default: http://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img
+                      default: https://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img
                   upgrade-workloadmemory:
                       type: Value
                       help: |