diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0b493b02..c9c1b485 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: set up JDK 1.8
         uses: actions/setup-java@v1
         with:
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-18.04
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: set up JDK 1.8
         uses: actions/setup-java@v1
         with: