diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 5f3c5236..6fdf297a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -23,7 +23,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
       - uses: julia-actions/setup-julia@f40c4b69330df1d22e7590c12e76dc2f9c66e0bc
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index 6afc0479..22c369c9 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'