diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
index ad2ba292..4228ebd9 100644
--- a/.github/workflows/Downgrade.yml
+++ b/.github/workflows/Downgrade.yml
@@ -22,7 +22,7 @@ jobs:
       matrix:
         version: ['1.10', '1.11']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/JuliaFormatter.yml b/.github/workflows/JuliaFormatter.yml
index 81b40678..ff17cd40 100644
--- a/.github/workflows/JuliaFormatter.yml
+++ b/.github/workflows/JuliaFormatter.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - uses: dorny/paths-filter@v3.0.2
       id: filter
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af481815..cc409676 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index e9a74490..fa5efa7b 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -15,7 +15,7 @@ jobs:
   docbuild:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@latest
         with:
           version: "1.10"
diff --git a/.github/workflows/downstream.yml b/.github/workflows/downstream.yml
index 0553021f..4d95c70f 100644
--- a/.github/workflows/downstream.yml
+++ b/.github/workflows/downstream.yml
@@ -30,13 +30,13 @@ jobs:
           - '1.10'
           - '1.11'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
       - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           repository: 'CliMA/${{ matrix.package }}'
           path: ${{ matrix.package }}