diff --git a/.github/workflows/ci_backend.yml b/.github/workflows/ci_backend.yml
index afd241d94ee2d7a46e149ae63be5057cec231fbd..1ca15c2813a103320686a8cc2262029b4a00bd04 100644
--- a/.github/workflows/ci_backend.yml
+++ b/.github/workflows/ci_backend.yml
@@ -45,7 +45,7 @@ jobs:
   Compile-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up JDK 1.8
         uses: actions/setup-java@v1
         with:
@@ -55,7 +55,7 @@ jobs:
   License-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up JDK 1.8
         uses: actions/setup-java@v1
         with:
diff --git a/.github/workflows/ci_e2e.yml b/.github/workflows/ci_e2e.yml
index 13f12641fed08e302153ca2938285c5dc74f8ba4..09f66fab110cf93b074f9f7257ff06d935c53461 100644
--- a/.github/workflows/ci_e2e.yml
+++ b/.github/workflows/ci_e2e.yml
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
         with:
           submodules: true
       - uses: actions/cache@v1
diff --git a/.github/workflows/ci_frontend.yml b/.github/workflows/ci_frontend.yml
index fab75c634120976635118a977769559615214c3b..1f959b40eb1f40d954d0f00a5899e0067e1c6a04 100644
--- a/.github/workflows/ci_frontend.yml
+++ b/.github/workflows/ci_frontend.yml
@@ -34,7 +34,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up Node.js
         uses: actions/setup-node@v1
         with:
@@ -49,7 +49,7 @@ jobs:
   License-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up JDK 1.8
         uses: actions/setup-java@v1
         with:
diff --git a/.github/workflows/ci_ut.yml b/.github/workflows/ci_ut.yml
index 6f3eda0362f9027dee638ed3c49e78b9a2f657b1..6451c2f8bb01aeea27c6e01b3c22cd573468eca0 100644
--- a/.github/workflows/ci_ut.yml
+++ b/.github/workflows/ci_ut.yml
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
         with:
           submodules: true
       - uses: actions/cache@v1