diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1b745f3..a9fbd6f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.6.0
         with:
           fetch-depth: 0
 
@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.6.0
 
       - uses: actions/setup-python@v2.2.2
         with:
@@ -64,7 +64,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.6.0
         with:
           ref: ${{ github.ref }}