diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d6f678c..d92e746 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -49,7 +49,7 @@ jobs:
             version: '1.0'
             arch: 'x64'  # run x86_64 build of Julia under Rosetta 2 emulation
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/Invalidations.yml b/.github/workflows/Invalidations.yml
index 66c86a3..1ca08de 100644
--- a/.github/workflows/Invalidations.yml
+++ b/.github/workflows/Invalidations.yml
@@ -19,12 +19,12 @@ jobs:
     - uses: julia-actions/setup-julia@v2
       with:
         version: '1'
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: julia-actions/julia-buildpkg@v1
     - uses: julia-actions/julia-invalidations@v1
       id: invs_pr
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         ref: ${{ github.event.repository.default_branch }}
     - uses: julia-actions/julia-buildpkg@v1