diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8e2593d3..c2f36627 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     container: ghcr.io/opencyphal/toxic:tx22.4.2
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.10'
     - name: version-check
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 36af9173..54fa1018 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ghcr.io/opencyphal/toxic:tx22.4.2
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: lint
@@ -27,17 +27,17 @@ jobs:
     - name: package
       run: tox -e package
     - name: upload-coverage-reports
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: coverage-reports
         path: .tox/report/tmp/*
     - name: upload-xunit-results
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: xunit-results
         path: .tox/py310-test/tmp/xunit-result.xml
     - name: upload-package
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: pypi-package
         path: .tox/package/dist/*
@@ -45,19 +45,18 @@ jobs:
   sonar:
     runs-on: ubuntu-latest
     needs: test
-    container: sonarsource/sonar-scanner-cli
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         # Disabling shallow clone is recommended for improving relevancy of reporting
         fetch-depth: 0
     - name: download-converage-reports
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: coverage-reports
         path: .tox/report/tmp/
     - name: download-xunit-results
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: xunit-results
         path: .tox/py310-test/tmp/
@@ -104,11 +103,11 @@ jobs:
     runs-on: ${{ matrix.python3-platform }}
     needs: test
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: setup python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: 3.${{ matrix.python3-version }}
     - name: setup tox
@@ -124,7 +123,7 @@ jobs:
     container: ghcr.io/opencyphal/toxic:tx22.4.2
     needs: test
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: python3.${{ matrix.python3-version }} test
@@ -133,7 +132,7 @@ jobs:
   language-verification-c:
     runs-on: ubuntu-latest
     needs: test
-    container: ghcr.io/opencyphal/toolshed:ts22.4.2
+    container: ghcr.io/opencyphal/toolshed:ts22.4.8
     strategy:
       matrix:
         build_type: [Debug, Release, MinSizeRel]
@@ -147,7 +146,7 @@ jobs:
           - build_type: Release
             flag: --disable-asserts
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: verify
@@ -163,7 +162,7 @@ jobs:
   language-verification-cpp-14:
     runs-on: ubuntu-latest
     needs: test
-    container: ghcr.io/opencyphal/toolshed:ts22.4.1
+    container: ghcr.io/opencyphal/toolshed:ts22.4.8
     strategy:
       matrix:
         build_type: [Debug, Release, MinSizeRel]
@@ -178,7 +177,7 @@ jobs:
             flag: --disable-asserts
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: verify
@@ -195,7 +194,7 @@ jobs:
   language-verification-cpp-17:
     runs-on: ubuntu-latest
     needs: test
-    container: ghcr.io/opencyphal/toolshed:ts22.4.1
+    container: ghcr.io/opencyphal/toolshed:ts22.4.8
     strategy:
       matrix:
         build_type: [Debug, Release, MinSizeRel]
@@ -210,7 +209,7 @@ jobs:
             flag: --disable-asserts
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: verify
@@ -229,7 +228,7 @@ jobs:
     needs: test
     container: ghcr.io/opencyphal/toxic:tx22.4.2
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: verify
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index cb715996..7f673c6e 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -80,8 +80,8 @@ skip the docker invocations and use ``tox run -s``.
 
 To run the language verification build you'll need to use a different docker container::
 
-    docker pull ghcr.io/opencyphal/toolshed:ts22.4.5
-    docker run --rm -it -v $PWD:/workspace ghcr.io/opencyphal/toolshed:ts22.4.5
+    docker pull ghcr.io/opencyphal/toolshed:ts22.4.8
+    docker run --rm -it -v $PWD:/workspace ghcr.io/opencyphal/toolshed:ts22.4.8
     cd /workspace
     ./.github/verify.py -l c
     ./.github/verify.py -l cpp
@@ -94,6 +94,17 @@ If you get a "denied" response from ghcr your ip might be getting rate-limited.
 you'll have to login to get around any rate-limiting for your local site. See [the github docs](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry)
 for how to setup a docker client login.
 
+
+If you get the following error::
+
+    gcc: error: unrecognized command-line option ‘-m32’
+
+...it may mean you are trying to run one of our 32-bit platform tests using an armv8 docker image. For these builds
+you might need to override the target platform and pull the x86 version of the container explicitly. For example::
+
+     docker run --rm -it --platform linux/amd64 -v $PWD:/workspace ghcr.io/opencyphal/toolshed:ts22.4.8
+
+
 Files Generated by the Tests
 ================================================
 
diff --git a/submodules/unity b/submodules/unity
index 98045925..1d28a998 160000
--- a/submodules/unity
+++ b/submodules/unity
@@ -1 +1 @@
-Subproject commit 98045925af4409942d43ac348aeab5a0554c9c7f
+Subproject commit 1d28a9981207fa03be19018f60b23d5dca53cabc
diff --git a/verification/.devcontainer/devcontainer.json b/verification/.devcontainer/devcontainer.json
index 533a16a2..99d72894 100644
--- a/verification/.devcontainer/devcontainer.json
+++ b/verification/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
     "name": "C/C++ verification environment",
-    "image": "ghcr.io/opencyphal/toolshed:ts22.4.5",
+    "image": "ghcr.io/opencyphal/toolshed:ts22.4.8",
     "workspaceFolder": "/workspace",
     "workspaceMount": "source=${localWorkspaceFolder}/..,target=/workspace,type=bind,consistency=delegated",
     "mounts": [