diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 1281256a0..8ce34057c 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -38,7 +38,7 @@ jobs:
           - os: macos-latest
             version: "1"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
@@ -72,7 +72,7 @@ jobs:
     name: Aqua
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
@@ -89,7 +89,7 @@ jobs:
     name: JET
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
@@ -117,7 +117,7 @@ jobs:
       pull-requests: read  # Required when using `push_preview=true`
       statuses: write  # Optional, used to report documentation build statuses
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
@@ -138,7 +138,7 @@ jobs:
     name: Doctest
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           # we'll restrict doctests to a minor version, to avoid failures due