diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index 201631404..2d2c2fc5f 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -62,7 +62,7 @@ jobs:
 
       # Checkout (copy) this repository's Plugin to this VM.
       - name: Checkout Plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: ${{ env.PLUGIN_DIR }}
 
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index df88c917a..0f6bfecbf 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
       # Checkout (copy) this repository's Plugin to this VM.
       - name: Checkout Plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # Installs required packages that must be included in the Plugin
       # as specified in composer.json's "require" section.
diff --git a/.github/workflows/tests-backward-compat.yml b/.github/workflows/tests-backward-compat.yml
index 93f1ca084..9b10a5f78 100644
--- a/.github/workflows/tests-backward-compat.yml
+++ b/.github/workflows/tests-backward-compat.yml
@@ -77,7 +77,7 @@ jobs:
       # Checkout Plugin to /home/runner/work/convertkit-wordpress/convertkit-wordpress/convertkit
       # We cannot checkout to ${{ env.PLUGIN_DIR }} as GitHub Actions require it be first placed in /home/runner/work/repo/repo
       - name: Checkout Plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: /home/runner/work/convertkit-wordpress/convertkit-wordpress/convertkit
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6cf311f85..33e56ab16 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -92,7 +92,7 @@ jobs:
       # Checkout Plugin to /home/runner/work/convertkit-wordpress/convertkit-wordpress/convertkit
       # We cannot checkout to ${{ env.PLUGIN_DIR }} as GitHub Actions require it be first placed in /home/runner/work/repo/repo
       - name: Checkout Plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: /home/runner/work/convertkit-wordpress/convertkit-wordpress/convertkit
 
@@ -422,7 +422,7 @@ jobs:
     steps:
       # Checkout (copy) this repository's Plugin to this VM.
       - name: Checkout Plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # Installs Kit WordPress Libraries.
       - name: Run Composer