diff --git a/.github/workflows/manual_test.yml b/.github/workflows/manual_test.yml
index 8815fc7..3460614 100644
--- a/.github/workflows/manual_test.yml
+++ b/.github/workflows/manual_test.yml
@@ -51,7 +51,7 @@ jobs:
           disk_size: ${{ inputs.disk_size }}
           runner_service_account: ${{ inputs.runner_service_account }}
           image_project: ubuntu-os-cloud
-          image_family: ubuntu-2004-lts
+          image_family: ubuntu-2204-lts
           no_external_address: ${{ inputs.no_external_address }}
           actions_preinstalled: ${{ inputs.actions_preinstalled }}
           shutdown_timeout: ${{ inputs.shutdown_timeout }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bb62ce5..3f76145 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
           project_id: ${{ secrets.GCP_PROJECT_ID }}
           service_account_key: ${{ secrets.GCP_SA_KEY }}
           image_project: ubuntu-os-cloud
-          image_family: ubuntu-2004-lts
+          image_family: ubuntu-2204-lts
           # NOTE: if you do not want external IPs, you must configure your GCE project
           #       to allow access to the Internet e.g. via Cloud NAT, if you are fine
           #       with external IPs, no_external_address should be false (default).
diff --git a/README.md b/README.md
index fc2752c..7fe9aca 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ jobs:
           project_id: ${{ secrets.GCP_PROJECT_ID }}
           service_account_key: ${{ secrets.GCP_SA_KEY }}
           image_project: ubuntu-os-cloud
-          image_family: ubuntu-2004-lts
+          image_family: ubuntu-2204-lts
 
   test:
     needs: create-runner