diff --git a/.github/workflows/merge.yml b/.github/workflows/merge.yml
index 612abab5..ea3baa35 100644
--- a/.github/workflows/merge.yml
+++ b/.github/workflows/merge.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@2d7d9f7ff5b310f983d059b68785b3c74d8b8edd
+    - uses: actions/checkout@b6849436894e144dbce29d7d7fda2ae3bf9d8365
     - name: Set up JDK 8
       uses: actions/setup-java@8e04ddff28554375a9a1096c888a2ef2c9803cd7
       with:
diff --git a/.github/workflows/pullrequest.yml b/.github/workflows/pullrequest.yml
index 4539fc16..19950aec 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@2d7d9f7ff5b310f983d059b68785b3c74d8b8edd
+        uses: actions/checkout@b6849436894e144dbce29d7d7fda2ae3bf9d8365
 
       - name: Set up JDK 8
         uses: actions/setup-java@8e04ddff28554375a9a1096c888a2ef2c9803cd7
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0cb1d8ad..cd4780bc 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@2d7d9f7ff5b310f983d059b68785b3c74d8b8edd
+        uses: actions/checkout@b6849436894e144dbce29d7d7fda2ae3bf9d8365
       - name: Set up JDK 8
         if: ${{ steps.release.outputs.release_created }}
         uses: actions/setup-java@8e04ddff28554375a9a1096c888a2ef2c9803cd7
diff --git a/.github/workflows/static-code-scanning.yaml b/.github/workflows/static-code-scanning.yaml
index 2f82be00..4b11a0cf 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@2d7d9f7ff5b310f983d059b68785b3c74d8b8edd
+        uses: actions/checkout@b6849436894e144dbce29d7d7fda2ae3bf9d8365
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL