diff --git a/.github/workflows/arduino-lint.yml b/.github/workflows/arduino-lint.yml
index bd9a1509..4de5ad61 100644
--- a/.github/workflows/arduino-lint.yml
+++ b/.github/workflows/arduino-lint.yml
@@ -16,11 +16,11 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # See: https://github.com/arduino/arduino-lint-action#readme
       - name: Arduino Lint
-        uses: arduino/arduino-lint-action@v1
+        uses: arduino/arduino-lint-action@v2
         with:
           path: megaavr
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-code-formatting.yml b/.github/workflows/check-code-formatting.yml
index 73d516c5..7a9a3cf1 100644
--- a/.github/workflows/check-code-formatting.yml
+++ b/.github/workflows/check-code-formatting.yml
@@ -5,14 +5,14 @@ on:
     paths:
       - ".github/workflows/check-code-formatting.yml"
       - "megaavr/bootloaders/**"
-#      - "megaavr/cores/**"
+      #      - "megaavr/cores/**"
       - "megaavr/libraries/**"
       - "megaavr/variants/**"
   push:
     paths:
       - ".github/workflows/check-code-formatting.yml"
       - "megaavr/bootloaders/**"
-#      - "megaavr/cores/**"
+      #      - "megaavr/cores/**"
       - "megaavr/libraries/**"
       - "megaavr/variants/**"
   # workflow_dispatch event allows the workflow to be triggered manually
@@ -51,10 +51,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check code formatting
-        uses: spencekonde/artistic-style-action@main
+        uses: wke67/artistic-style-action@main
         with:
           options-file-path: ${{ env.OPTIONS_FILE_PATH }}
           name-patterns: |
@@ -62,31 +62,31 @@ jobs:
           target-paths: |
             - megaavr/bootloaders
 
-#  cores:
-#    runs-on: ubuntu-latest
+  cores:
+    runs-on: ubuntu-latest
 
-#    steps:
-#      - name: Checkout
-#        uses: actions/checkout@v4
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
 
-#      - name: Check code formatting
-#        uses: per1234/artistic-style-action@main
-#        with:
-#          options-file-path: ${{ env.OPTIONS_FILE_PATH }}
-#          name-patterns: |
-#            ${{ env.NAME_PATTERNS }}
-#          target-paths: |
-#            - megaavr/cores
+      - name: Check code formatting
+        uses: wke67/artistic-style-action@main
+        with:
+          options-file-path: ${{ env.OPTIONS_FILE_PATH }}
+          name-patterns: |
+            ${{ env.NAME_PATTERNS }}
+          target-paths: |
+            - megaavr/cores
 
   libraries:
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check code formatting
-        uses: spencekonde/artistic-style-action@main
+        uses: wke67/artistic-style-action@main
         with:
           options-file-path: ${{ env.OPTIONS_FILE_PATH }}
           name-patterns: |
@@ -99,10 +99,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check code formatting
-        uses: spencekonde/artistic-style-action@main
+        uses: wke67/artistic-style-action@main
         with:
           options-file-path: ${{ env.OPTIONS_FILE_PATH }}
           name-patterns: |
diff --git a/.github/workflows/check-keywords-txt.yml b/.github/workflows/check-keywords-txt.yml
deleted file mode 100644
index f5796273..00000000
--- a/.github/workflows/check-keywords-txt.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-name: Check keywords.txt
-
-on:
-  pull_request:
-    paths:
-      - ".github/workflows/check-keywords-txt.yml"
-      - "megaavr/libraries/**"
-  push:
-    paths:
-      - ".github/workflows/check-keywords-txt.yml"
-      - "megaavr/libraries/**"
-  # workflow_dispatch event allows the workflow to be triggered manually
-  # See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows#workflow_dispatch
-  workflow_dispatch:
-  # repository_dispatch event allows the workflow to be triggered via the GitHub API
-  # See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows#repository_dispatch
-  repository_dispatch:
-
-jobs:
-  check-keywords-txt:
-    runs-on: ubuntu-latest
-
-    env:
-      ARDUINO_CI_SCRIPT_FOLDER_PATH: extras/ci/tools/arduino-ci-script
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install arduino-ci-script
-        uses: per1234/install-arduino-ci-script-action@main
-        with:
-          installation-path: ${{ env.ARDUINO_CI_SCRIPT_FOLDER_PATH }}
-
-      - name: Check keywords.txt
-        run: |
-          source "${{ env.ARDUINO_CI_SCRIPT_FOLDER_PATH }}/arduino-ci-script.sh"
-          # https://github.com/per1234/arduino-ci-script#check_keywords_txt-searchpath-maximumsearchdepth
-          check_keywords_txt "${GITHUB_WORKSPACE}/megaavr/libraries" 1
diff --git a/.github/workflows/check-library-structure.yml b/.github/workflows/check-library-structure.yml
index 17bd8314..510c6039 100644
--- a/.github/workflows/check-library-structure.yml
+++ b/.github/workflows/check-library-structure.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install arduino-ci-script
         uses: per1234/install-arduino-ci-script-action@main
diff --git a/.github/workflows/compile-examples-macros.yml b/.github/workflows/compile-examples-macros.yml
index cd46f84c..d4c8244e 100644
--- a/.github/workflows/compile-examples-macros.yml
+++ b/.github/workflows/compile-examples-macros.yml
@@ -201,7 +201,6 @@ jobs:
           - device-family: dd
             int-osc: 20
 
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
@@ -228,7 +227,7 @@ jobs:
             # The sketches don't have any external library dependencies, so just define an empty array
             -
           verbose: false
-          enable-deltas-report: false
+          enable-deltas-report: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
           enable-warnings-report: true
           sketches-report-path: sketches-reports
diff --git a/.github/workflows/compile-regression-test.yml b/.github/workflows/compile-regression-test.yml
index e6602b1c..9c8ea899 100644
--- a/.github/workflows/compile-regression-test.yml
+++ b/.github/workflows/compile-regression-test.yml
@@ -183,8 +183,6 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
-        with:
-          ref: test
 
       # See: https://github.com/arduino/compile-sketches/README.md
 
@@ -208,7 +206,7 @@ jobs:
             # The sketches don't have any external library dependencies, so just define an empty array
             -
           verbose: false
-          enable-deltas-report: false
+          enable-deltas-report: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          enable-warnings-report: false
+          enable-warnings-report: true
           sketches-report-path: sketches-reports