diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index c806ae66..363ba27f 100644
--- a/.github/workflows/black.yml
+++ b/.github/workflows/black.yml
@@ -14,11 +14,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: conda-incubator/setup-miniconda@v2
+    - uses: conda-incubator/setup-miniconda@v2.2.0
       with:
-        auto-update-conda: true
-        python-version: 3.9
+        python-version: '3.11'
+        mamba-version: "*"
+        channels: conda-forge
+        miniforge-variant: Mambaforge
         channel-priority: strict
+        auto-update-conda: true
+        environment-file: .ci_support/environment-openmpi.yml
     - name: Setup
       shell: bash -l {0}
       run: |
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 8a7b1656..b32f614b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -13,7 +13,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: '3.11'
 
     - name: Install dependencies
       run: >-
diff --git a/.github/workflows/pypicheck.yml b/.github/workflows/pypicheck.yml
index e22a051c..202829a7 100644
--- a/.github/workflows/pypicheck.yml
+++ b/.github/workflows/pypicheck.yml
@@ -8,22 +8,18 @@ on:
 
 jobs:
   build:
-
-    runs-on: ${{ matrix.operating-system }}
-    strategy:
-      matrix:
-        operating-system: [ubuntu-latest]
-        python-version: [3.9]
-
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
     - uses: conda-incubator/setup-miniconda@v2.2.0
       with:
-        auto-update-conda: true
-        python-version: ${{ matrix.python-version }}
+        python-version: '3.11'
+        mamba-version: "*"
+        channels: conda-forge
+        miniforge-variant: Mambaforge
         channel-priority: strict
+        auto-update-conda: true
         environment-file: .ci_support/environment-openmpi.yml
-        miniforge-variant: Mambaforge
     - name: Setup
       shell: bash -l {0}
       run: |
diff --git a/.github/workflows/unittest-mpich.yml b/.github/workflows/unittest-mpich.yml
index 5a0e20d0..5268df86 100644
--- a/.github/workflows/unittest-mpich.yml
+++ b/.github/workflows/unittest-mpich.yml
@@ -14,8 +14,6 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, macos-latest]
-        python-version: ['3.11']
         include:
         - operating-system: macos-latest
           python-version: '3.11'
diff --git a/.github/workflows/unittest-openmpi.yml b/.github/workflows/unittest-openmpi.yml
index d5837386..35063cf5 100644
--- a/.github/workflows/unittest-openmpi.yml
+++ b/.github/workflows/unittest-openmpi.yml
@@ -14,8 +14,6 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, macos-latest]
-        python-version: ['3.11']
         include:
         - operating-system: macos-latest
           python-version: '3.11'