diff --git a/.github/workflows/dependencies.yml b/.github/workflows/dependencies.yml
new file mode 100644
index 0000000000..a6be0e2249
--- /dev/null
+++ b/.github/workflows/dependencies.yml
@@ -0,0 +1,78 @@
+name: Check deps
+
+on:
+  pull_request:
+    paths:
+      - setup.py
+      - requirements.txt
+      - requirements-dev.in
+      - requirements-dev.txt
+      - .github/workflows/dependencies.yml
+
+env:
+  DEBIAN_FRONTEND: noninteractive
+
+permissions:
+  contents: write
+
+jobs:
+  quality:
+    name: Checking dependency graph
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-20.04']
+        python-version: ['3.8']
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.wheel_dir
+
+          key: ${{ matrix.os }}-pip-${{ matrix.python-version }}
+          restore-keys: |
+            ${{ matrix.os }}-pip-${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          pip3 wheel --wheel-dir=~/.wheel_dir pip wheel setuptools
+          pip3 install --find-links=~/.wheel_dir --upgrade pip wheel setuptools
+          pip3 wheel --wheel-dir=~/.wheel_dir -r requirements-dev.txt
+          pip3 install --find-links=~/.wheel_dir --upgrade -r requirements-dev.txt
+
+      - name: Check dependency graph
+        run: |
+          pip-compile -q
+          pip-compile -q requirements-dev.in
+
+      - name: Verify dependency graph is ok
+        uses: tj-actions/verify-changed-files@v13
+        id: verify-changed-files
+        with:
+          files: |
+             requirements.txt
+             requirements-dev.txt
+
+      - name: Validating graph
+        if: steps.verify-changed-files.outputs.files_changed == 'true' && github.actor != 'dependabot[bot]'
+        run: |
+          echo "Dependency file(s) changed: ${{ steps.verify-changed-files.outputs.changed_files }}"
+          core.setFailed('Please add your new dependencies in setup.py and/or requirements-dev.in then run pip-compile to add them in requirements. (see docs/contribute/development)')
+
+      - name: Dependabot commit dependencies
+        uses: stefanzweifel/git-auto-commit-action@v4
+        if: ${{ github.actor == 'dependabot[bot]' }}
+        with:
+          commit_message: Apply dependencies update by dependabot
+          commit_user_name: dependabot[bot]
+          commit_user_email: support@github.com
+          commit_author: dependabot[bot] <support@github.com>
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 3ffbd34163..008cbd435f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,18 +1,22 @@
 name: Linting
 
 on:
-  push:
+  pull_request:
+    paths:
+      - 'geotrek/**'
+      - '.github/workflows/lint.yml'
 
 env:
   DEBIAN_FRONTEND: noninteractive
 
-permissions:
-  contents: write
-
 jobs:
-  quality:
-    name: Checking dependency graph and code quality
-    runs-on: ubuntu-20.04
+  flake8:
+    name: Checking Flake8 rules
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-20.04']
+        python-version: ['3.8']
 
     steps:
       - uses: actions/checkout@v3
@@ -22,40 +26,27 @@ jobs:
           test $(ls geotrek/*/migrations/*.py | xargs grep -l srid | xargs grep -L SRID | wc -l) -eq 0
 
 
-      - name: Set up Python 3.8
+      - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8  # lint with minimal version supported (3.8 in 18.04)
-
-      - name: Install dependencies
-        run: |
-          pip3 install --upgrade pip wheel setuptools
-          pip3 install -r requirements-dev.txt -U
-
-      - name: Check dependency graph
-        run: |
-          pip-compile -q
-          pip-compile -q requirements-dev.in
+          python-version: ${{ matrix.python-version }}
 
-      - name: Verify dependency graph is ok
-        uses: tj-actions/verify-changed-files@v13
-        id: verify-changed-files
+      - uses: actions/cache@v3
         with:
-          files: |
-             requirements.txt
-             requirements-dev.txt
+          path: |
+            ~/.cache/pip
+            ~/.wheel_dir
 
-      - name: Validating graph
-        if: steps.verify-changed-files.outputs.files_changed == 'true' && github.actor != 'dependabot[bot]'
-        run: |
-          echo "Dependency file(s) changed: ${{ steps.verify-changed-files.outputs.changed_files }}"
-          core.setFailed('Please add your new dependencies in setup.py and/or requirements-dev.in then run pip-compile to add them in requirements. (see docs/contribute/development)')
+          key: ${{ matrix.os }}-pip-${{ matrix.python-version }}
+          restore-keys: |
+            ${{ matrix.os }}-pip-${{ matrix.python-version }}
 
-      - name: Dependabot commit dependencies
-        uses: stefanzweifel/git-auto-commit-action@v4
-        if: ${{ github.actor == 'dependabot[bot]' }}
-        with:
-          commit_message: Apply dependencies update by dependabot
+      - name: Install dependencies
+        run: |
+          pip3 wheel --wheel-dir=~/.wheel_dir pip wheel setuptools
+          pip3 install --find-links=~/.wheel_dir --upgrade pip wheel setuptools
+          pip3 wheel --wheel-dir=~/.wheel_dir -r requirements-dev.txt
+          pip3 install --find-links=~/.wheel_dir --upgrade -r requirements-dev.txt
 
       - name: Flake8
         run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 12416f4717..d731e41031 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -83,9 +83,9 @@ jobs:
           ~/.cache/pip
           ~/.wheel_dir
 
-        key: ${{ runner.os }}-pip-${{ matrix.python-version }}
+        key: ${{ matrix.os }}-pip-${{ matrix.python-version }}
         restore-keys: |
-          ${{ runner.os }}-pip-${{ matrix.python-version }}
+          ${{ matrix.os }}-pip-${{ matrix.python-version }}
 
     - name: Install System dependencies
       run: |
@@ -118,7 +118,8 @@ jobs:
 
     - name: Install python dependencies
       run: |
-        python3 -m pip install --upgrade pip setuptools wheel
+        pip3 wheel --wheel-dir=~/.wheel_dir pip wheel setuptools
+        pip3 install --find-links=~/.wheel_dir --upgrade pip wheel setuptools
         pip3 wheel --wheel-dir=~/.wheel_dir -r requirements.txt
         pip3 wheel --wheel-dir=~/.wheel_dir -r requirements-dev.txt
         pip3 install --find-links=~/.wheel_dir -r requirements.txt