diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e8d7152e6..7dd00e127 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,6 +12,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ['3.8', '3.9', '3.10']
 
+    defaults:
+      run:
+        shell: bash
+
     steps:
 
     - uses: actions/checkout@v3
@@ -22,32 +26,47 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install Poetry
-      run: pip install poetry==1.1.15
-
-    - name: Determine poetry version
-      run: echo "::set-output name=VERSION::$(poetry --version)"
-      id: poetry_version
-
-    - name: Cache poetry.lock
-      uses: actions/cache@v3
+      uses: snok/install-poetry@v1
       with:
-        path: poetry.lock
-        key: ${{ matrix.os }}-${{ matrix.python-version }}-poetry-${{ steps.poetry_version.outputs.VERSION }}-${{ hashFiles('pyproject.toml') }}
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+  
+    - name: Load cached venv
+      id: cached-pip-wheels
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache
+        key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
 
     - name: Install project dependencies
       run: poetry install -vvv --no-root
 
     - name: Run mypy on 'tests' (using the local stubs) and on the local stubs
-      run: poetry run poe mypy
+      run: |
+        source $VENV
+        poetry run poe mypy
 
     - name: Run pyright on 'tests' (using the local stubs) and on the local stubs
-      run: poetry run poe pyright
+      run: |
+        source $VENV
+        poetry run poe pyright
 
     - name: Run pytest
-      run: poetry run poe pytest
+      run: |
+        source $VENV
+        poetry run poe pytest
 
     - if: matrix.python-version == '3.8' && matrix.os == 'ubuntu-latest'
       uses: pre-commit/action@v3.0.0
 
     - name: Install pandas-stubs and run tests on the installed stubs
-      run: poetry run poe test_dist
+      run: |
+        source $VENV
+        poetry build -f wheel
+        python -m pip install --find-links=./dist --force-reinstall pandas-stubs
+        mv pandas-stubs _pandas-stubs
+        mypy tests --no-incremental
+        pyright tests
+        mv _pandas-stubs pandas-stubs
+
+
diff --git a/pandas-stubs/core/dtypes/generic.pyi b/pandas-stubs/core/dtypes/generic.pyi
new file mode 100644
index 000000000..cdcc2a9ba
--- /dev/null
+++ b/pandas-stubs/core/dtypes/generic.pyi
@@ -0,0 +1,31 @@
+def create_pandas_abc_type(name, attr, comp): ...
+
+class ABCIndex: ...
+class ABCInt64Index: ...
+class ABCUInt64Index: ...
+class ABCRangeIndex: ...
+class ABCFloat64Index: ...
+class ABCMultiIndex: ...
+class ABCDatetimeIndex: ...
+class ABCTimedeltaIndex: ...
+class ABCPeriodIndex: ...
+class ABCCategoricalIndex: ...
+class ABCIntervalIndex: ...
+class ABCIndexClass: ...
+class ABCSeries: ...
+class ABCDataFrame: ...
+class ABCSparseArray: ...
+class ABCCategorical: ...
+class ABCDatetimeArray: ...
+class ABCTimedeltaArray: ...
+class ABCPeriodArray: ...
+class ABCPeriod: ...
+class ABCDateOffset: ...
+class ABCInterval: ...
+class ABCExtensionArray: ...
+class ABCPandasArray: ...
+
+class _ABCGeneric(type):
+    def __instancecheck__(cls, inst) -> bool: ...
+
+class ABCGeneric: ...
diff --git a/pandas-stubs/core/groupby/indexing.pyi b/pandas-stubs/core/groupby/indexing.pyi
new file mode 100644
index 000000000..2abcc696e
--- /dev/null
+++ b/pandas-stubs/core/groupby/indexing.pyi
@@ -0,0 +1,3 @@
+class GroupByIndexingMixin: ...
+class GroupByPositionalSelector: ...
+class GroupByNthSelector: ...
diff --git a/pyproject.toml b/pyproject.toml
index a8678c611..1fea54512 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,7 @@
 [tool.poetry]
 name = "pandas-stubs"
-version = "1.4.3.220829"
+# Use the big version number so in CI, it will use the built wheel
+version = "1.4.3.999999"
 description = "Type annotations for pandas"
 authors = ["The Pandas Development Team <pandas-dev@python.org>"]
 license = "BSD-3-Clause"
@@ -56,6 +57,9 @@ pyreadstat = ">=1.1.9"
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
+[tool.poe.executor]
+type = "virtualenv"
+
 [tool.poe.tasks.test_all]
 help = "Run all tests"
 script = "scripts.test:test(src=True, dist=True)"