diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5af4fab..57e0a58 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -37,7 +37,7 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-pandoc@v2
 
diff --git a/.github/workflows/valgrind.yaml b/.github/workflows/valgrind.yaml
index ff195a3..e45bc34 100644
--- a/.github/workflows/valgrind.yaml
+++ b/.github/workflows/valgrind.yaml
@@ -16,7 +16,7 @@ jobs:
     name: valgrind-check
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Check with valgrind
         run: bash inst/tools/valgrind-check.sh