diff --git a/.github/workflows/pull-request-checks.yml b/.github/workflows/pull-request-checks.yml
index 2474c465a..584ea70c2 100644
--- a/.github/workflows/pull-request-checks.yml
+++ b/.github/workflows/pull-request-checks.yml
@@ -27,7 +27,7 @@ jobs:
         py-ver: ["py312", "py313", "py314"]
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false
 
@@ -85,12 +85,12 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false
 
       - name: Setup python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.x"
 
@@ -135,12 +135,12 @@ jobs:
       contents: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.x"
 
@@ -165,7 +165,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7c62d4e78..24a6c4753 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,14 +21,14 @@ jobs:
       contents: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           # Get full history to ensure setuptools_scm is happy.
           fetch-depth: 0
           persist-credentials: false
 
       - name: Setup python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
             python-version: "3.x"
 
diff --git a/.github/workflows/scheduled-updates.yml b/.github/workflows/scheduled-updates.yml
index 9f8bd4bfa..9a1082409 100644
--- a/.github/workflows/scheduled-updates.yml
+++ b/.github/workflows/scheduled-updates.yml
@@ -18,13 +18,13 @@ jobs:
       contents: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           # Persist credentials so we can push back to GitHub.
           persist-credentials: true
 
       - name: Setup python
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.x"
 
diff --git a/.github/workflows/weekly-checks.yml b/.github/workflows/weekly-checks.yml
index 2db75221d..ac3651f56 100644
--- a/.github/workflows/weekly-checks.yml
+++ b/.github/workflows/weekly-checks.yml
@@ -17,7 +17,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false