diff --git a/.github/workflows/prepare_environment.sh b/.github/workflows/prepare_environment.sh
deleted file mode 100755
index 892a886..0000000
--- a/.github/workflows/prepare_environment.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-PYTHON_VERSION=$1
-
-conda create --quiet -c conda-forge -c free -n test-env \
-    python="$PYTHON_VERSION" \
-    "pytest>=4.6" pylint pytest-cov pytest-mock pycodestyle \
-    mock setuptools setuptools_scm wheel
-source "${CONDA}/bin/activate" test-env
-pip install ".[testing]"
diff --git a/.github/workflows/python2-3-app.yml b/.github/workflows/python2-3-app.yml
index 764e6ed..c938a8e 100644
--- a/.github/workflows/python2-3-app.yml
+++ b/.github/workflows/python2-3-app.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name != 'push'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v2
       with:
         python-version: '3.9'
@@ -16,31 +16,45 @@ jobs:
     - name: Run pre-commit
       run: pre-commit run --all-files --show-diff-on-failure
 
-  build:
-    runs-on: ubuntu-latest
+  pytest:
+    runs-on: ubuntu-20.04
+    if: github.event_name != 'push' || github.repository == 'DIRACGrid/db12'
+
     strategy:
-      fail-fast: False
       matrix:
-        python_version:
-          - 2.7
-          - 3.6
-          - 3.9
+        python:
+          - 2.7.18
+          - 3.6.15
+          - 3.9.17
+          - 3.11.4
 
+    container: python:${{ matrix.python }}-slim
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - name: Installing dependencies
+      run: |
+        python -m pip install pytest mock
+        pip install -e .
+    - name: Run pytest
+      run: pytest
 
-    - uses: actions/checkout@v2
-    - name: Prepare environment
-      run: .github/workflows/prepare_environment.sh ${{ matrix.python_version }}
+  pylint:
+    runs-on: ubuntu-20.04
+    if: github.event_name != 'push' || github.repository == 'DIRACGrid/db12'
+    timeout-minutes: 10
 
-    - name: Run pylint
-      run: |
-        . "${CONDA}/bin/activate" test-env
-        pylint -E src/db12/ tests/
+    strategy:
+      matrix:
+        python:
+          - 2.7.18
+          - 3.6.15
+          - 3.9.17
 
-    - name: Run pytest
+    container: python:${{ matrix.python }}-slim
+    steps:
+    - uses: actions/checkout@v4
+    - name: Installing dependencies
       run: |
-        . "${CONDA}/bin/activate" test-env
-        pytest tests
+        python -m pip install pylint pytest mock
+    - name: Run pylint
+      run: pylint -E src/db12 tests
diff --git a/environment.yml b/environment.yml
index 8e61232..06cf492 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,8 +3,6 @@ name: db12
 dependencies:
   - python =3.9
   - future
-  - mock
   - pre-commit
-  - pylint
-  - pytest
-  - pytest-mock
+  - pip:
+    - -e .
diff --git a/pyproject.toml b/pyproject.toml
index 374b58c..494f262 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,13 @@
 [build-system]
-requires = [
-    "setuptools>=42",
-    "wheel"
-]
+requires = ["setuptools>=42", "wheel", "setuptools_scm[toml]>=3.4"]
 build-backend = "setuptools.build_meta"
+
+# Enable setuptools_scm to compute the version number from the most recent tag
+# https://github.com/pypa/setuptools_scm/#pyprojecttoml-usage
+[tool.setuptools_scm]
+# Avoid letting setuptools_scm use old style tags (i.e. vXrYpZ)
+git_describe_command = "git describe --dirty --tags --long --match *[0-9].[0-9]* --exclude v[0-9]r* --exclude v[0-9][0-9]r*"
+
+[tool.isort]
+profile = "black"
+
diff --git a/src/db12/benchmark.py b/src/db12/benchmark.py
index 30d44d5..82a11ff 100644
--- a/src/db12/benchmark.py
+++ b/src/db12/benchmark.py
@@ -64,7 +64,7 @@ def single_dirac_benchmark(iterations_num=1, measured_copies=None, correction=Tr
 
         it_1 += 1
 
-    cput = sum(end[:4]) - sum(start[:4])
+    cput = sum(end[:4]) - sum(start[:4])  # pylint: disable=used-before-assignment
     wall = end[4] - start[4]
 
     if not cput:
diff --git a/tests/test_DB12.py b/tests/test_DB12.py
index 2203fee..45199d2 100644
--- a/tests/test_DB12.py
+++ b/tests/test_DB12.py
@@ -1,8 +1,9 @@
 """Unit test for DB12"""
+from __future__ import print_function
 from __future__ import absolute_import
 from __future__ import division
+
 import pytest
-import mock
 
 from db12 import single_dirac_benchmark
 from db12 import multiple_dirac_benchmark