diff --git a/.github/workflows/flutter_markdown.yaml b/.github/workflows/flutter_markdown.yaml
index 10d1e17f..c497158d 100644
--- a/.github/workflows/flutter_markdown.yaml
+++ b/.github/workflows/flutter_markdown.yaml
@@ -19,13 +19,13 @@ jobs:
 
     steps:
       - name: clone dart-lang/markdown
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
         with:
           repository: dart-lang/markdown
           path: markdown
 
       - name: clone flutter/packages
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
         with:
           repository: flutter/packages
           path: flutter_packages
diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index 51588305..381cde99 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -22,7 +22,7 @@ jobs:
       matrix:
         sdk: [dev]
     steps:
-      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       - uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
         with:
           sdk: ${{ matrix.sdk }}
@@ -49,7 +49,7 @@ jobs:
         os: [ubuntu-latest]
         sdk: [2.19.0, dev]
     steps:
-      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       - uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
         with:
           sdk: ${{ matrix.sdk }}
@@ -64,7 +64,7 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
     - uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
       with:
         sdk: dev