diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 6f594252..0d395e6d 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -14,7 +14,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'skip ci')"
     steps:
       - name: checkout
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
         with:
           fetch-depth: 0
 
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     if: "!contains(github.event.head_commit.message, 'skip ci')"
     steps:
-      - uses: actions/checkout@v2.3.5
+      - uses: actions/checkout@v2.4.0
         with:
           fetch-depth: 0
 
@@ -94,7 +94,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'skip ci')"
     steps:
       - name: checkout
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 825ac152..6bad89a2 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2.3.5
+      uses: actions/checkout@v2.4.0
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.