diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 38d8b80f..953428b8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -27,7 +27,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Cache p4est
         id: cache-p4est
         uses: actions/cache@v2
@@ -115,7 +115,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: '1'