diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
deleted file mode 100644
index c01b1441..00000000
--- a/.github/workflows/docs.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-name: docs
-
-on:
-  push:
-    branches:
-      - main
-    paths:
-      - 'docs/**'
-      - 'AUTHORS.md'
-      - 'CONTRIBUTING.md'
-      - 'HISTORY.md'
-      - 'README.md'
-  pull_request:
-    paths:
-      - 'docs/**'
-      - 'AUTHORS.md'
-      - 'CONTRIBUTING.md'
-      - 'HISTORY.md'
-      - 'README.md'
-jobs:
-  run:
-    continue-on-error: True
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      matrix:
-        os: [ubuntu-latest]
-        python-version: [3.8]
-
-    timeout-minutes: 30
-
-    steps:
-    - uses: actions/checkout@master
-    - uses: actions/setup-python@master
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        pip install tox
-        
-        # Install markdown-spellcheck
-        sudo npm install -g markdown-spellcheck
-    - name: Generate Documentation
-      run: tox -e docs
-    - name: Run markdown-spellcheck
-      run: tox -e spell_check
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
deleted file mode 100644
index 0d674423..00000000
--- a/.github/workflows/lint.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-name: lint
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-
-jobs:
-  run:
-    continue-on-error: True
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      matrix:
-        os: [ubuntu-latest]
-        python-version: [3.8]
-
-    timeout-minutes: 30
-
-    steps:
-    - uses: actions/checkout@master
-    - uses: actions/setup-python@master
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run:  pip install poetry tox
-    - name: Check Poetry lock file
-      run: make poetry-lock-check
-    - name: Code style check
-      run: |
-        tox -e black-check,ruff-check,vulture,darglint
-    - name: Static type check
-      run: tox -e mypy
-    - name: Check copyright
-      run: tox -e check-copyright
-    - name: Misc checks
-      run: |
-        tox -e bandit,safety
\ No newline at end of file
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 988fdd43..a9878b6f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [macos-11]
         python-version: [3.8, 3.9, "3.10", "3.11"]
 
     timeout-minutes: 30
@@ -37,14 +37,23 @@ jobs:
 #      env:
 #        ACTIONS_ALLOW_UNSECURE_COMMANDS: true
 #      run: ...
-    - if: ${{ (matrix.os == 'ubuntu-latest') || (matrix.os == 'macos-latest') }}
-      name: Unit tests and coverage (ubuntu-latest, macos-latest)
+    - if: matrix.os == 'macos-11'
+      name: Install dependencies (macos-11)
+      run: |
+        # for some reason this seems to be a necessary step for MacOS images, but not for Ubuntu and Windows
+        brew install hdf5
+        brew install c-blosc
+        # https://stackoverflow.com/questions/73029883/could-not-find-hdf5-installation-for-pytables-on-m1-mac
+        echo "HDF5_DIR=/usr/local/" >> $GITHUB_ENV
+        echo "BLOSC_DIR=/usr/local/" >> $GITHUB_ENV
+    - if: ${{ (matrix.os == 'ubuntu-latest') || (matrix.os == 'macos-11') }}
+      name: Unit tests and coverage (ubuntu-latest, macos-11)
       run: |
         pyver=`echo ${{ matrix.python-version }} | tr -d "."`
         tox -e py${pyver} -- -m 'not e2e'
         tox -e py${pyver}-nb
-    - if: ${{ (matrix.os == 'ubuntu-latest') || (matrix.os == 'macos-latest') }}
-      name: Notebook tests (ubuntu-latest, macos-latest)
+    - if: ${{ (matrix.os == 'ubuntu-latest') || (matrix.os == 'macos-11') }}
+      name: Notebook tests (ubuntu-latest, macos-11)
       run: |
         pyver=`echo ${{ matrix.python-version }} | tr -d "."`
         tox -e py${pyver}-nb