diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index 84de29dca0..d0c76d4c7e 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -21,14 +21,14 @@ jobs:
           - {user: ITensor, repo: ITensorVisualizationBase.jl}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
           arch: x64
       - uses: julia-actions/julia-buildpkg@latest
       - name: Clone Downstream
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: ${{ matrix.package.user }}/${{ matrix.package.repo }}
           path: downstream
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 1c2fa381bc..b7c22acbf4 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -18,7 +18,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
diff --git a/.github/workflows/main_test_itensors_base_macos_windows.yml b/.github/workflows/main_test_itensors_base_macos_windows.yml
index d71f7bcd17..cbd93f7b62 100644
--- a/.github/workflows/main_test_itensors_base_macos_windows.yml
+++ b/.github/workflows/main_test_itensors_base_macos_windows.yml
@@ -27,7 +27,7 @@ jobs:
           # MacOS not available on x86
           - {os: 'macOS-latest', arch: 'x86'}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/test_itensors_base_ubuntu.yml b/.github/workflows/test_itensors_base_ubuntu.yml
index e2dd5d4b2c..7dac0ad036 100644
--- a/.github/workflows/test_itensors_base_ubuntu.yml
+++ b/.github/workflows/test_itensors_base_ubuntu.yml
@@ -28,7 +28,7 @@ jobs:
           # MacOS not available on x86
           - {os: 'macOS-latest', arch: 'x86'}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/test_ndtensors.yml b/.github/workflows/test_ndtensors.yml
index af8bb33b6e..6f86fa3794 100644
--- a/.github/workflows/test_ndtensors.yml
+++ b/.github/workflows/test_ndtensors.yml
@@ -25,7 +25,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}