diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd9b52c..884a08b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,10 +25,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.0
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v6.1.0
       with:
         python-version: "3.12"
 
@@ -75,10 +75,10 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.0
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v6.1.0
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -138,10 +138,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.0
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v6.1.0
       with:
         python-version: "3.12"
 
@@ -191,10 +191,10 @@ jobs:
     env: { MACOSX_DEPLOYMENT_TARGET: 11.0 }
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.0
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v6.1.0
       with:
         python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 4a7a461..ab34008 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -44,10 +44,10 @@ jobs:
       contents: write
 
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.1
+    - uses: actions/checkout@c2d88d3ecc89a9ef08eebf45d9637801dcee7eb5 # v4.1.1
 
     - name: Set up Python
-      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
+      uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
       with:
         python-version: "3.x"
 
@@ -72,7 +72,7 @@ jobs:
     outputs:
       include: ${{ steps.set-matrix.outputs.include }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.0
       - name: Install cibuildwheel
         # Nb. keep cibuildwheel version pin consistent with job below
         run: pipx install cibuildwheel==3.3.0
@@ -105,7 +105,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.0
 
       - name: Set up QEMU
         if: runner.os == 'Linux'
@@ -168,7 +168,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.0
 
       - name: Download files
         uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0