diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index afe95036..79b4ee82 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: 'Checkout'
-        uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+        uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - name: 'Publish'
         id: 'publish'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 26d5449e..d50bc5d2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -43,7 +43,7 @@ jobs:
     runs-on: 'ubuntu-latest'
 
     steps:
-      - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+      - uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
         with:
@@ -76,7 +76,7 @@ jobs:
       id-token: 'write'
 
     steps:
-      - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+      - uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
         with:
@@ -130,7 +130,7 @@ jobs:
       id-token: 'write'
 
     steps:
-      - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+      - uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
         with:
@@ -199,7 +199,7 @@ jobs:
           - 'macos-latest'
 
     steps:
-      - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+      - uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
         with:
@@ -261,7 +261,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: 'actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683' # ratchet:actions/checkout@v4
+      - uses: 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd' # ratchet:actions/checkout@v6.0.2
 
       - uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
         with:
diff --git a/README.md b/README.md
index 2ddaf781..f0309088 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ support](https://cloud.google.com/support).**
 
 ## Prerequisites
 
--   Run the `actions/checkout@v4` step _before_ this action. Omitting the
+-   Run the `actions/checkout@v6` step _before_ this action. Omitting the
     checkout step or putting it after `auth` will cause future steps to be
     unable to authenticate.
 
@@ -58,7 +58,7 @@ jobs:
       id-token: 'write'
 
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - uses: 'google-github-actions/auth@v3'
       with:
@@ -248,7 +248,7 @@ regardless of the authentication mechanism.
      jobs:
       job_id:
         steps:
-        - uses: 'actions/checkout@v4' # Must come first!
+        - uses: 'actions/checkout@v6' # Must come first!
         - uses: 'google-github-actions/auth@v3'
      ```
 
diff --git a/docs/EXAMPLES.md b/docs/EXAMPLES.md
index 03c4982a..84d73f88 100644
--- a/docs/EXAMPLES.md
+++ b/docs/EXAMPLES.md
@@ -77,7 +77,7 @@ value into a GitHub Secret named 'GOOGLE_CREDENTIALS'.
 jobs:
   job_id:
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - uses: 'google-github-actions/auth@v3'
       with:
@@ -97,7 +97,7 @@ jobs:
       id-token: 'write'
 
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - id: 'auth'
       uses: 'google-github-actions/auth@v3'
@@ -133,7 +133,7 @@ jobs:
       id-token: 'write'
 
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - id: 'auth'
       uses: 'google-github-actions/auth@v3'
@@ -170,7 +170,7 @@ jobs:
       id-token: 'write'
 
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - id: 'auth'
       uses: 'google-github-actions/auth@v3'
@@ -220,7 +220,7 @@ jobs:
       id-token: 'write'
 
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - id: 'auth'
       uses: 'google-github-actions/auth@v3'
diff --git a/docs/TROUBLESHOOTING.md b/docs/TROUBLESHOOTING.md
index f7f2cf9d..2046460c 100644
--- a/docs/TROUBLESHOOTING.md
+++ b/docs/TROUBLESHOOTING.md
@@ -21,12 +21,12 @@
     to these resources are eventually consistent. Usually they happen
     immediately, but sometimes they can take up to 5 minutes to propagate.
 
-1.  Ensure `actions/checkout@v4` is **before** the `auth` action in your
+1.  Ensure `actions/checkout@v6` is **before** the `auth` action in your
     workflow.
 
     ```yaml
     steps:
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
       - uses: 'google-github-actions/auth@v3'
     ```