diff --git a/.github/workflows/merge.yml b/.github/workflows/merge.yml
index 2a1277ea..354b06ee 100644
--- a/.github/workflows/merge.yml
+++ b/.github/workflows/merge.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+    - uses: actions/checkout@473055ba18d6d2da209cd46110aadb9275e3194e
     - name: Set up JDK 8
       uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8
       with:
diff --git a/.github/workflows/pullrequest.yml b/.github/workflows/pullrequest.yml
index a4bede02..122fc613 100644
--- a/.github/workflows/pullrequest.yml
+++ b/.github/workflows/pullrequest.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the code
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@473055ba18d6d2da209cd46110aadb9275e3194e
 
       - name: Set up JDK 8
         uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 72db682d..330de70e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,7 @@ jobs:
       # These steps are only run if this was a merged release-please PR
       - name: checkout
         if: ${{ steps.release.outputs.release_created }}
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@473055ba18d6d2da209cd46110aadb9275e3194e
       - name: Set up JDK 8
         if: ${{ steps.release.outputs.release_created }}
         uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8
diff --git a/.github/workflows/static-code-scanning.yaml b/.github/workflows/static-code-scanning.yaml
index 233e7657..01ff9615 100644
--- a/.github/workflows/static-code-scanning.yaml
+++ b/.github/workflows/static-code-scanning.yaml
@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@473055ba18d6d2da209cd46110aadb9275e3194e
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL