diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0498de1..0a7ed6c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,13 +13,16 @@ jobs:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        exclude:
+          - os: ubuntu-latest  # Ubuntu-latest can only install 3.7+.
+            python-version: 3.6
       fail-fast: false
 
     steps:
       - uses: actions/checkout@v3
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}