diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a2cc20..9700b43 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     name: Flake8
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4.1.6
       - name: Set Up Python
         uses: actions/setup-python@v5.0.0
         with:
@@ -34,7 +34,7 @@ jobs:
       matrix:
         python: [ '3.7', '3.8', '3.9', '3.10', '3.11', '3.12' ]
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4.1.6
       - name: Setup Build Tools
         run: sudo apt-get install -y libkrb5-dev krb5-user krb5-kdc krb5-admin-server krb5-multidev
       - name: Set Up Python
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
       - name: Set Up Python