diff --git a/.github/workflows/basic_checks.yml b/.github/workflows/basic_checks.yml
index 0df1123..524f350 100644
--- a/.github/workflows/basic_checks.yml
+++ b/.github/workflows/basic_checks.yml
@@ -17,7 +17,7 @@
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -60,7 +60,7 @@
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -81,7 +81,7 @@
     steps:
 
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
     
@@ -111,7 +111,7 @@
     steps:
 
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
     
@@ -155,7 +155,7 @@
     steps:
       -
         name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
 
       - uses: actions/setup-python@v2
@@ -184,7 +184,7 @@
     steps:
       -
         name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -210,7 +210,7 @@
     steps:
       -
         name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       -
         name: cmake build
@@ -237,7 +237,7 @@
       steps:
         -
           name: Checkout repo
-          uses: actions/checkout@v2
+          uses: actions/checkout@v3
           with:
             fetch-depth: 0
 
diff --git a/.github/workflows/docker_management.branch.yml b/.github/workflows/docker_management.branch.yml
index 45881b2..0556ca6 100644
--- a/.github/workflows/docker_management.branch.yml
+++ b/.github/workflows/docker_management.branch.yml
@@ -35,7 +35,7 @@
 
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -117,7 +117,7 @@
 
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       -
         name: Build docker containers
@@ -164,7 +164,7 @@
 
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - 
         name: Find DEV DOCKER DIGEST
@@ -178,7 +178,7 @@
       # development branch of blinky
       - 
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: ARMmbed/mbed-os-example-blinky
           path: mbed-os-example-blinky
diff --git a/.github/workflows/docker_management.prune.yml b/.github/workflows/docker_management.prune.yml
index 56814e0..cf48e97 100644
--- a/.github/workflows/docker_management.prune.yml
+++ b/.github/workflows/docker_management.prune.yml
@@ -13,7 +13,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - 
         name: Delete old temporary images
@@ -22,4 +22,4 @@
           # deletion if only one image exists or if DOCKER_MANAGEMENT_TOKEN is not 
           # setup. This shouldn't create any alarm as temporary image deletion is 
           # not a critical activity.
-          python ./.github/workflows/ci_scripts/ghcr_utils.py -u ${{ github.repository_owner }} -p ${{ secrets.DOCKER_MANAGEMENT_TOKEN }} delete-old-images -r mbed-os-env-tmp || true
\ No newline at end of file
+          python ./.github/workflows/ci_scripts/ghcr_utils.py -u ${{ github.repository_owner }} -p ${{ secrets.DOCKER_MANAGEMENT_TOKEN }} delete-old-images -r mbed-os-env-tmp || true
diff --git a/.github/workflows/docker_management.release.yml b/.github/workflows/docker_management.release.yml
index 809ac86..7ab0ce6 100644
--- a/.github/workflows/docker_management.release.yml
+++ b/.github/workflows/docker_management.release.yml
@@ -24,7 +24,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
@@ -134,7 +134,7 @@
 
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: refs/tags/${{ steps.build_info.outputs.MBED_OS_VERSION }}
 
@@ -198,7 +198,7 @@
       # development branch of blinky
       - 
         name: Checkout example blinky
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: ARMmbed/mbed-os-example-blinky
           path: mbed-os-example-blinky
@@ -224,7 +224,7 @@
 
       - 
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: refs/tags/${{ steps.build_info.outputs.MBED_OS_VERSION }}
           path: mbed-os-example-blinky/mbed-os
diff --git a/.github/workflows/docker_management.test-PR.yml b/.github/workflows/docker_management.test-PR.yml
index d41391a..7951a63 100644
--- a/.github/workflows/docker_management.test-PR.yml
+++ b/.github/workflows/docker_management.test-PR.yml
@@ -34,7 +34,7 @@
       # for PR tests, development branch of blinky is used
       - 
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: ARMmbed/mbed-os-example-blinky
           path: mbed-os-example-blinky
@@ -49,7 +49,7 @@
 
       -
         name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           path: mbed-os-example-blinky/mbed-os
         
diff --git a/.github/workflows/greentea_cmake.yml b/.github/workflows/greentea_cmake.yml
index f98921a..fc075dc 100644
--- a/.github/workflows/greentea_cmake.yml
+++ b/.github/workflows/greentea_cmake.yml
@@ -8,7 +8,7 @@
     container: ghcr.io/armmbed/mbed-os-env:master-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install the latest mbed-tools
         run: |
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f0ac022..69b2b6f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,8 +7,13 @@
     runs-on: ubuntu-latest
     
     steps:
+    - name: Work around https://github.com/actions/checkout/issues/766
+      run: |
+        cd "${GITHUB_WORKSPACE}" || exit 1
+        git config --global --add safe.directory "$GITHUB_WORKSPACE"
+
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install Python environment
         uses: actions/setup-python@v2
@@ -16,7 +21,7 @@
           python-version: 3.8
 
       - name: Checkout mbed-os-scripts repo (This repo is currently private)
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: ARMmbed/mbed-os-ci-scripts
           token: ${{ secrets.ISSUE_TRIAGING_PERMS }}
diff --git a/.github/workflows/run_conditional_ble_feature_compilation.yml b/.github/workflows/run_conditional_ble_feature_compilation.yml
index e93a01f..931efda 100644
--- a/.github/workflows/run_conditional_ble_feature_compilation.yml
+++ b/.github/workflows/run_conditional_ble_feature_compilation.yml
@@ -11,7 +11,7 @@
     container: mbedos/mbed-os-env:latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           path: mbed-os
 
diff --git a/.github/workflows/test_building_multiple_executables.yml b/.github/workflows/test_building_multiple_executables.yml
index 09d3a5a..b40a3a0 100644
--- a/.github/workflows/test_building_multiple_executables.yml
+++ b/.github/workflows/test_building_multiple_executables.yml
@@ -8,7 +8,7 @@
     container: ghcr.io/armmbed/mbed-os-env:master-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Build the multiple_executables example
         run: |