diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ce42ef..a3841e1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Clone
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: Select Swift for swift-format
         uses: mxcl/xcodebuild@v1
         with:
@@ -36,7 +36,7 @@ jobs:
             platform-name: Mac Catalyst
     steps:
       - name: Clone
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: Build & Test
         uses: mxcl/xcodebuild@v1
         with:
@@ -76,7 +76,7 @@ jobs:
             name: Undefined Behavior
     steps:
       - name: Clone
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.1.0
       - name: Select Latest Swift
         uses: mxcl/xcodebuild@v1
         with: