diff --git a/.github/workflows/add_member.yml b/.github/workflows/add_member.yml
index cf94c85..9616c61 100644
--- a/.github/workflows/add_member.yml
+++ b/.github/workflows/add_member.yml
@@ -28,7 +28,7 @@ jobs:
           python-version: '3.12'
 
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           # This is the default, but it's required since we are performing
           # Git operations later on.
diff --git a/.github/workflows/apply.yml b/.github/workflows/apply.yml
index 53b5e9d..3284139 100644
--- a/.github/workflows/apply.yml
+++ b/.github/workflows/apply.yml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/member-verification.yml b/.github/workflows/member-verification.yml
index 2851cf5..f612cda 100644
--- a/.github/workflows/member-verification.yml
+++ b/.github/workflows/member-verification.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/plan.yml b/.github/workflows/plan.yml
index 3079b5e..799d678 100644
--- a/.github/workflows/plan.yml
+++ b/.github/workflows/plan.yml
@@ -20,7 +20,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           ref: "${{ github.event.pull_request.head.ref }}"
           persist-credentials: false
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
index 7d597a5..2036429 100644
--- a/.github/workflows/zizmor.yml
+++ b/.github/workflows/zizmor.yml
@@ -18,7 +18,7 @@ jobs:
       actions: read # only needed for private repos
     steps:
       - name: Checkout repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false