diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index cc95abf8..e6885b10 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/gcc.yml b/.github/workflows/gcc.yml
index 2f8db2c9..ff8b1823 100644
--- a/.github/workflows/gcc.yml
+++ b/.github/workflows/gcc.yml
@@ -12,7 +12,7 @@ jobs:
   bip-apps:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -38,7 +38,7 @@ jobs:
   bip-no-bbmd-apps:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -52,7 +52,7 @@ jobs:
   gateway:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -66,7 +66,7 @@ jobs:
   router:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -80,7 +80,7 @@ jobs:
   router-ipv6:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -94,7 +94,7 @@ jobs:
   router-mstp:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -108,7 +108,7 @@ jobs:
   bip6:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -122,7 +122,7 @@ jobs:
   mstp:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -136,7 +136,7 @@ jobs:
   ethernet:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -150,7 +150,7 @@ jobs:
   ports-arm:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -168,7 +168,7 @@ jobs:
   ports-avr:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -183,7 +183,7 @@ jobs:
   ports-lwip:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
@@ -196,7 +196,7 @@ jobs:
   mingw:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 41522e29..e98f6360 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -12,7 +12,7 @@ jobs:
   scan-build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create LLVM clang-tools scan-build Workspace
       run: |
         sudo apt-get update -qq
@@ -25,7 +25,7 @@ jobs:
   splint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create SPLint Workspace
       run: |
         sudo apt-get update --quiet --assume-yes
@@ -37,7 +37,7 @@ jobs:
   cppcheck:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create CPPcheck Workspace
       run: |
         sudo apt-get update -qq
@@ -51,7 +51,7 @@ jobs:
   flawfinder:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Flawfinder Workspace
       run: |
         sudo apt-get update -qq
@@ -65,7 +65,7 @@ jobs:
   codespell:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create codespell Workspace
       run: |
         sudo apt-get update -qq
@@ -76,7 +76,7 @@ jobs:
   unittest:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cc25e31b..1ba9b1f5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
         os: [windows-latest, ubuntu-latest, macOS-latest]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Create Build Environment
       # Some projects don't allow in-source building, so create a separate build directory
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 951982ec..13aca9e9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create Build Environment
       run: |
         sudo apt-get update -qq
diff --git a/.github/workflows/zephyr.yml b/.github/workflows/zephyr.yml
index 42d6f07a..01ecb103 100644
--- a/.github/workflows/zephyr.yml
+++ b/.github/workflows/zephyr.yml
@@ -10,7 +10,7 @@ jobs:
       CMAKE_PREFIX_PATH: /opt/toolchains
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: bacnet-stack