diff --git a/.github/workflows/continuous-deployment.yml b/.github/workflows/continuous-deployment.yml
index 353abb7..dd6924c 100644
--- a/.github/workflows/continuous-deployment.yml
+++ b/.github/workflows/continuous-deployment.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2.0.0
 
       - name: "Build Docker image"
         run: $(which docker) build --tag ${DOCKER_IMAGE}:latest .
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 8fcdac4..7b3be82 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2.0.0
 
       - name: "Build Docker image"
         run: $(which docker) build --tag ${DOCKER_IMAGE}:latest .