diff --git a/.github/workflows/blog.yaml b/.github/workflows/blog.yaml
index 561e4277b..0156a1f70 100644
--- a/.github/workflows/blog.yaml
+++ b/.github/workflows/blog.yaml
@@ -14,7 +14,7 @@ jobs:
       run:
         shell: bash -l {0}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 3
       - uses: mamba-org/provision-with-micromamba@v16
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e439216c0..e990e6a6a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # submodules: true  # Fetch Hugo themes (true OR recursive)
           fetch-depth: 3 # Fetch all history for .GitInfo and .Lastmod
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
diff --git a/.github/workflows/create_release.yml b/.github/workflows/create_release.yml
index 9f0ae2566..cea473299 100644
--- a/.github/workflows/create_release.yml
+++ b/.github/workflows/create_release.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: main
           ssh-key: ${{ secrets.CMU_DELPHI_DEPLOY_MACHINE_SSH }}
diff --git a/.github/workflows/release_main.yml b/.github/workflows/release_main.yml
index 60da121e4..3e43176c1 100644
--- a/.github/workflows/release_main.yml
+++ b/.github/workflows/release_main.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 16
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 16
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: dev
           ssh-key: ${{ secrets.CMU_DELPHI_DEPLOY_MACHINE_SSH }}