diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 06042df..226da6d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -72,7 +72,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
     outputs:
       python-key: ${{ steps.generate-python-key.outputs.key }}
     steps:
@@ -106,8 +106,8 @@ jobs:
         run: |
           python -m venv venv
           . venv/bin/activate
-          python -m pip install -U pip setuptools wheel
-          pip install -U -r requirements_test.txt
+          python -m pip install -U pip poetry
+          poetry install
 
   pytest-linux:
     name: Run tests Python ${{ matrix.python-version }} (Linux)
@@ -116,7 +116,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v2.4.0
@@ -197,7 +197,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
     outputs:
       python-key: ${{ steps.generate-python-key.outputs.key }}
     steps:
@@ -231,8 +231,8 @@ jobs:
         run: |
           python -m venv venv
           . venv\\Scripts\\activate
-          python -m pip install -U pip setuptools wheel
-          pip install -U -r requirements_test_min.txt
+          python -m pip install -U pip poetry
+          poetry install
 
   pytest-windows:
     name: Run tests Python ${{ matrix.python-version }} (Windows)
@@ -241,7 +241,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
     steps:
       - name: Set temp directory
         run: echo "TEMP=$env:USERPROFILE\AppData\Local\Temp" >> $env:GITHUB_ENV
@@ -311,8 +311,8 @@ jobs:
         run: |
           python -m venv venv
           . venv/bin/activate
-          python -m pip install -U pip setuptools wheel
-          pip install -U -r requirements_test_min.txt
+          python -m pip install -U pip poetry
+          poetry install
 
   pytest-pypy:
     name: Run tests Python ${{ matrix.python-version }}