diff --git a/.github/workflows/check-links-external.yml b/.github/workflows/check-links-external.yml
index 0671206a5c..ee52defa12 100644
--- a/.github/workflows/check-links-external.yml
+++ b/.github/workflows/check-links-external.yml
@@ -24,6 +24,8 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
+        with:
+          persist-credentials: false
       - name: Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -46,4 +48,4 @@ jobs:
           title: Broken Links Report - External
           content-filepath: ./broken_links.md
           repository: ${{ env.REPORT_REPOSITORY }}
-          labels: ${{ env.REPORT_LABEL }}
\ No newline at end of file
+          labels: ${{ env.REPORT_LABEL }}
diff --git a/.github/workflows/check-links-internal.yml b/.github/workflows/check-links-internal.yml
index ed2447e17e..f4bf4c0732 100644
--- a/.github/workflows/check-links-internal.yml
+++ b/.github/workflows/check-links-internal.yml
@@ -24,6 +24,8 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
+        with:
+          persist-credentials: false
       - name: Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -46,4 +48,4 @@ jobs:
           title: Broken Links Report - Local
           content-filepath: ./broken_links.md
           repository: ${{ env.REPORT_REPOSITORY }}
-          labels: ${{ env.REPORT_LABEL }}
\ No newline at end of file
+          labels: ${{ env.REPORT_LABEL }}
diff --git a/.github/workflows/grammar-lint.yml b/.github/workflows/grammar-lint.yml
index 4cf3c09459..05c17946de 100644
--- a/.github/workflows/grammar-lint.yml
+++ b/.github/workflows/grammar-lint.yml
@@ -7,6 +7,8 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@master
+      with:
+        persist-credentials: false
 
     - name: Vale
       uses: errata-ai/vale-action@master
diff --git a/.github/workflows/repo-sync.yml b/.github/workflows/repo-sync.yml
index 2d420ddd84..d4524ca945 100644
--- a/.github/workflows/repo-sync.yml
+++ b/.github/workflows/repo-sync.yml
@@ -10,6 +10,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        persist-credentials: false
     
     - uses: repo-sync/github-sync@v2
       name: Sync repo to branch