diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ad832f7..815d705 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -224,6 +224,8 @@ jobs:
         - ubuntu-latest
         - ubuntu-24.04
         - ubuntu-24.04-arm
+        - ubuntu-24.04-ppc64le
+        - ubuntu-24.04-s390x
         - ubuntu-22.04
         - ubuntu-22.04-arm
         - macos-latest
@@ -241,7 +243,7 @@ jobs:
         uses: ./
         with:
           api_key: ${{ secrets.IBMCLOUD_API_KEY }}
-          plugins: container-service
+          plugins: secrets-manager
       - name: Check logged in
         run: |
           ibmcloud target | grep -q 'User:\s\+${{ secrets.IBMCLOUD_USER }}' &&
diff --git a/README.md b/README.md
index f3b84e6..1f74e45 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 
 | OS      | Supported        |
 | ------- | ---------------- |
-| Ubuntu  | `ubuntu-24.04` (`ubuntu-latest`), `ubuntu-24.04-arm`, `ubuntu-22.04`, `ubuntu-22.04-arm` |
+| Ubuntu  | `ubuntu-24.04` (`ubuntu-latest`), `ubuntu-24.04-arm`, `ubuntu-24.04-ppc64le`, `ubuntu-24.04-s390x`, `ubuntu-22.04`, `ubuntu-22.04-arm` |
 | macOS   | `macos-26`, `macos-15` (`macos-latest`), `macos-14` |
 | Windows | `windows-2025` (`windows-latest`), `windows-2022` |