diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index b3511d304..8b9b9382b 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        python-version: ["3.6", "3.7", "3.8", "3.9"]
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10.0-beta.1"]
     defaults:
       run:
         shell: bash
@@ -20,21 +20,25 @@ jobs:
           python-version: ${{ matrix.python-version }}
           architecture: x64
       - name: Install and configure Poetry
-        uses: snok/install-poetry@v1.1.1
+        uses: snok/install-poetry@v1.1.6
         with:
-          version: 1.1.4
-          virtualenvs-create: false
+          version: 1.1.6
+          virtualenvs-in-project: true
       - name: Install dependencies
         run: poetry install
         if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
       - name: Format check with black
-        run: make format-check
+        run: |
+          source $VENV
+          make format-check
       - name: Typecheck with mypy
-        run: make typecheck
+        run: |
+          source $VENV
+          make typecheck
       - name: Test with pytest
         run: |
-          pip install .
-          python -m pytest tests -v --cov=./rich --cov-report=xml:./coverage.xml --cov-report term-missing
+          source $VENV
+          pytest tests -v --cov=./rich --cov-report=xml:./coverage.xml --cov-report term-missing
       - name: Upload code coverage
         uses: codecov/codecov-action@v1.0.10
         with:
diff --git a/pyproject.toml b/pyproject.toml
index 68cbe2a91..0ac2b2522 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ include = ["rich/py.typed"]
 [tool.poetry.dependencies]
 python = "^3.6"
 typing-extensions = {version = "^3.7.4", python = "<3.8"}
-dataclasses = {version=">=0.7,<0.9", python = "~3.6"} 
+dataclasses = {version=">=0.7,<0.9", python = "~3.6"}
 pygments = "^2.6.0"
 commonmark = "^0.9.0"
 colorama = "^0.4.0"