diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a24934b..bcb3dc4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the codebase.
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install hadolint.
         run: |
@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the codebase.
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Find an open port.
         run: |