diff --git a/.github/workflows/downstream.yml b/.github/workflows/downstream.yml
index e6206ae..907a238 100644
--- a/.github/workflows/downstream.yml
+++ b/.github/workflows/downstream.yml
@@ -43,7 +43,7 @@ jobs:
         python -m pip install --upgrade -e file://$PWD#egg=ipython[test]
         # we must install IPython after ipykernel to get the right versions.
         python -m pip install --upgrade --upgrade-strategy eager flaky ipyparallel
-        python -m pip install --upgrade 'pytest<7' 
+        python -m pip install --upgrade 'pytest<7'  'pytest_asyncio<0.21'
     - name: pytest
       env:
         COLUMNS: 120
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index fc1f19e..6629b62 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -28,7 +28,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install darker==1.5.1 black==22.10.0
+        pip install --only-binary ':all:' darker==1.5.1 black==22.10.0
     - name: Lint with darker
       run: |
         darker -r 60625f241f298b5039cb2debc365db38aa7bb522 --check --diff . || (
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 62cdea4..b3c170f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -58,11 +58,18 @@ jobs:
     - name: Install latex
       if: runner.os == 'Linux' && matrix.deps == 'test_extra'
       run: echo "disable latex for now, issues in mirros" #sudo apt-get -yq -o Acquire::Retries=3 --no-install-suggests --no-install-recommends install texlive dvipng
-    - name: Install and update Python dependencies
+    - name: Install and update Python dependencies (binary only)
+      if: ${{ ! contains( matrix.python-version, 'dev' ) }}
       run: |
-        python -m pip install --upgrade pip setuptools wheel build
-        python -m pip install --upgrade -e .[${{ matrix.deps }}]
-        python -m pip install --upgrade check-manifest pytest-cov  pytest-json-report
+        python -m pip install --only-binary ':all:' --upgrade pip setuptools wheel build
+        python -m pip install --only-binary ':all:' --no-binary curio --upgrade -e .[${{ matrix.deps }}]
+        python -m pip install --only-binary ':all:' --upgrade check-manifest pytest-cov  pytest-json-report
+    - name: Install and update Python dependencies (dev?)
+      if: ${{ contains( matrix.python-version, 'dev' ) }}
+      run: |
+        python -m pip install --pre --upgrade pip setuptools wheel build
+        python -m pip install --pre --no-binary curio --upgrade -e .[${{ matrix.deps }}]
+        python -m pip install --pre --upgrade check-manifest pytest-cov  pytest-json-report
     - name: Try building with Python build
       if: runner.os != 'Windows'  # setup.py does not support sdist on Windows
       run: |