diff --git a/.github/workflows/python2-app.yml b/.github/workflows/python2-app.yml
index 57c3cae..bfce20f 100644
--- a/.github/workflows/python2-app.yml
+++ b/.github/workflows/python2-app.yml
@@ -15,23 +15,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 2.7
-      run: |
-        sudo apt update
-        sudo apt install python2 python-pip
-        sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1
-        sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 2
-        printf '1\n' | sudo update-alternatives --config python
-        cd /usr/bin
-        sudo ln -s /usr/bin/pip2 ./pip
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install --upgrade setuptools
-        pip install -r requirements-dev.txt
-        pip install coveralls
-        pip install -e .
+    - uses: actions/checkout@v4
     - name: Test with mamba
       run: |
-        mamba --enable-coverage
\ No newline at end of file
+        docker run --rm -v "$PWD:/work" -w /work python:2.7 bash -lc "
+          python -m pip install --upgrade 'pip<21' 'setuptools<45' &&
+          pip install -r requirements-dev.txt &&
+          pip install coveralls &&
+          pip install -e . &&
+          mamba --enable-coverage
+        "
diff --git a/.github/workflows/python3-app.yml b/.github/workflows/python3-app.yml
index 020e4a9..0722aee 100644
--- a/.github/workflows/python3-app.yml
+++ b/.github/workflows/python3-app.yml
@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Python 3.7
+name: Python 3.11
 
 on:
   push:
@@ -15,11 +15,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - name: Set up Python 3.11
+      uses: actions/setup-python@v5
       with:
-        python-version: "3.7"
+        python-version: "3.11"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -29,4 +29,4 @@ jobs:
         pip install -e .
     - name: Test with mamba
       run: |
-        mamba --enable-coverage
\ No newline at end of file
+        mamba --enable-coverage
diff --git a/requirements-dev.txt b/requirements-dev.txt
index cfe475b..726d3a0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,2 +1,3 @@
-mamba<0.11
+mamba==0.10; python_version < "3.11"
+mamba==0.11.3; python_version >= "3.11"
 expects