diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index ef9d84a..153ed37 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,12 +1,10 @@
-# This is a template `CODEOWNERS` file for ops charms
-# This file is managed by bootstack-charms-spec and should not be modified
-# within individual charm repos. https://launchpad.net/bootstack-charms-spec
-
-# For more information about CODEOWNER, please refer to
-# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners#example-of-a-codeowners-file
-
+# This file is centrally managed as a template file in https://github.com/canonical/solutions-engineering-automation
+# To update the file:
+# - Edit it in the canonical/solutions-engineering-automation repository.
+# - Open a PR with the changes.
+# - When the PR merges, the soleng-terraform bot will open a PR to the target repositories with the changes.
+#
 # These owners will be the default owners for everything in the repo. Unless a
-# later match takes precedence, @canonical/bootstack will be requested for
+# later match takes precedence, @canonical/soleng-reviewers will be requested for
 # review when someone opens a pull request.
-*       @canonical/soleng-reviewers
-
+*    @canonical/soleng-reviewers
diff --git a/.github/workflows/check.yaml b/.github/workflows/check.yaml
index 333a97d..4ae13eb 100644
--- a/.github/workflows/check.yaml
+++ b/.github/workflows/check.yaml
@@ -1,3 +1,8 @@
+# This file is centrally managed as a template file in https://github.com/canonical/solutions-engineering-automation
+# To update the file:
+# - Edit it in the canonical/solutions-engineering-automation repository.
+# - Open a PR with the changes.
+# - When the PR merges, the soleng-terraform bot will open a PR to the target repositories with the changes.
 name: Tests
 
 on:
@@ -34,12 +39,19 @@ jobs:
       matrix:
         runs-on: [[ubuntu-latest]]
         test-command: ['make functional']
+        juju-channel: ["3.4/stable"]
     steps:
 
       - uses: actions/checkout@v4
         with:
           submodules: true
 
+        # arm64 runners don't have make or gcc installed by default
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y make gcc
+
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
@@ -49,7 +61,7 @@ jobs:
         uses: charmed-kubernetes/actions-operator@main
         with:
           provider: "lxd"
-          juju-channel: "3.4/stable"
+          juju-channel: ${{ matrix.juju-channel }}
           charmcraft-channel: "2.x/stable"
 
         # This is used by zaza in the functional tests for non-amd64 architectures (if applicable)
diff --git a/.github/workflows/promote.yaml b/.github/workflows/promote.yaml
index 18408ee..f9fc791 100644
--- a/.github/workflows/promote.yaml
+++ b/.github/workflows/promote.yaml
@@ -1,3 +1,8 @@
+# This file is centrally managed as a template file in https://github.com/canonical/solutions-engineering-automation
+# To update the file:
+# - Edit it in the canonical/solutions-engineering-automation repository.
+# - Open a PR with the changes.
+# - When the PR merges, the soleng-terraform bot will open a PR to the target repositories with the changes.
 name: Promote charm to default track, standard risk levels.
 
 on:
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 2724c65..a55f7b6 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -1,3 +1,8 @@
+# This file is centrally managed as a template file in https://github.com/canonical/solutions-engineering-automation
+# To update the file:
+# - Edit it in the canonical/solutions-engineering-automation repository.
+# - Open a PR with the changes.
+# - When the PR merges, the soleng-terraform bot will open a PR to the target repositories with the changes.
 name: Release to Edge
 
 on: