diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 13a3ef30..fc2c1453 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -46,7 +46,7 @@ jobs:
             # Install an x86_64 build of Julia, and run it under Rosetta 2 emulation
             arch: 'x64'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/Documenter.yml b/.github/workflows/Documenter.yml
index f5ad1998..986613c2 100644
--- a/.github/workflows/Documenter.yml
+++ b/.github/workflows/Documenter.yml
@@ -16,7 +16,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1'                         # replace this with whatever version you need