diff --git a/.github/actions/install-deps/action.yml b/.github/actions/install-deps/action.yml
index 34aafc55a..163d93871 100644
--- a/.github/actions/install-deps/action.yml
+++ b/.github/actions/install-deps/action.yml
@@ -12,6 +12,10 @@ inputs:
     description: 'Dependency groups to install (space-separated, e.g., "test doc")'
     required: false
     default: ''
+  resolution:
+    description: 'Resolution strategy (e.g., "lowest-direct"). Use "none" for the default strategy.'
+    required: false
+    default: 'none'
 
 runs:
   using: composite
@@ -20,7 +24,7 @@ runs:
       shell: bash
       run: uv venv
 
-    - name: Install dependencies (options=[${{ inputs.options }}], groups=[${{ inputs.groups }}])
+    - name: Install dependencies (options=[${{ inputs.options }}], groups=[${{ inputs.groups }}], resolution=[${{ inputs.resolution }}])
       shell: bash
       run: |
         # Map "none" to the empty string
@@ -42,6 +46,12 @@ runs:
           cmd="$cmd --group $group"
         done
 
+        # Add resolution strategy
+        resolution_input="${{ inputs.resolution }}"
+        if [ "$resolution_input" != "none" ] && [ -n "$resolution_input" ]; then
+          cmd="$cmd --resolution $resolution_input"
+        fi
+
         # Print and execute the command
         echo $cmd
         eval $cmd
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 7d2e51d3e..4bf3bc0d6 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -17,7 +17,7 @@ jobs:
   tests:
     # Default config: py3.14, ubuntu-latest, float32, full options.
     # The idea is to make each of those params vary one by one, to limit the number of tests to run.
-    name: Tests (py${{ matrix.python-version || '3.14' }}, ${{ matrix.os || 'ubuntu-latest' }}, ${{ matrix.dtype || 'float32' }}, ${{ matrix.options || 'full' }}${{ matrix.extra_groups && format(', {0}', matrix.extra_groups) || '' }})
+    name: Tests (py${{ matrix.python-version || '3.14' }}, ${{ matrix.os || 'ubuntu-latest' }}, ${{ matrix.dtype || 'float32' }}, ${{ matrix.options || 'full' }}${{ matrix.resolution && format(', {0}', matrix.resolution) || '' }})
     runs-on: ${{ matrix.os || 'ubuntu-latest' }}
     strategy:
       fail-fast: false
@@ -38,7 +38,7 @@ jobs:
           - options: 'none'
           # Lower-bounds of all dependencies and Python version.
           - python-version: '3.10.0'
-            extra_groups: 'lower_bounds'
+            resolution: 'lowest-direct'
 
     steps:
       - name: Checkout repository
@@ -52,7 +52,8 @@ jobs:
       - uses: ./.github/actions/install-deps
         with:
           options: ${{ matrix.options || 'full' }}
-          groups: test ${{ matrix.extra_groups }}
+          groups: test
+          resolution: ${{ matrix.resolution || 'none' }}
 
       - name: Run unit tests
         run: uv run pytest -W error tests/unit --cov=src --cov-report=xml
diff --git a/pyproject.toml b/pyproject.toml
index d743aae9a..0a89ae704 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,6 +66,22 @@ Source = "https://github.com/SimplexLab/TorchJD"
 Changelog = "https://github.com/SimplexLab/TorchJD/blob/main/CHANGELOG.md"
 
 [dependency-groups]
+_numpy = [
+    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
+]
+_quadprog = [
+    "quadprog>=0.1.9, != 0.1.10",  # Doesn't work before 0.1.9, 0.1.10 is yanked
+]
+_qpsolvers = [
+    "qpsolvers>=1.0.1",  # Does not work before 1.0.1
+]
+_cvxpy = [
+    "cvxpy>=1.3.0",  # No Clarabel solver before 1.3.0
+]
+_ecos = [
+    "ecos>=2.0.14",  # Does not work before 2.0.14
+]
+
 check = [
     "ruff>=0.14.14",
     "ty>=0.0.14",
@@ -90,46 +106,33 @@ test = [
 ]
 
 plot = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
+    {include-group = "_numpy"},
     "plotly[kaleido]>=5.19.0",  # Recent version to avoid problems, could be relaxed
     "dash>=2.16.0",  # Recent version to avoid problems, could be relaxed
     "matplotlib>=3.10.0",  # Recent version to avoid problems, could be relaxed
 ]
-# Dependency group allowing to easily resolve version of the recommended dependencies to the lower
-# bound.
-lower_bounds = [
-    "torch==2.3.0",
-    "numpy==1.21.2",
-    "quadprog==0.1.9",
-    "qpsolvers==1.0.1",
-]
 
 [project.optional-dependencies]
 quadprog_projector = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
-    "quadprog>=0.1.9, != 0.1.10",  # Doesn't work before 0.1.9, 0.1.10 is yanked
-    "qpsolvers>=1.0.1",  # Does not work before 1.0.1
+    {include-group = "_numpy"},
+    {include-group = "_quadprog"},
+    {include-group = "_qpsolvers"},
 ]
 nash_mtl = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
-    "cvxpy>=1.3.0",  # Could be relaxed
-    "ecos>=2.0.14",  # Does not work before 2.0.14
+    {include-group = "_numpy"},
+    {include-group = "_cvxpy"},
+    {include-group = "_ecos"},
 ]
 cagrad = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
-    "cvxpy>=1.3.0",  # No Clarabel solver before 1.3.0
+    {include-group = "_numpy"},
+    {include-group = "_cvxpy"},
 ]
 fairgrad = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
+    {include-group = "_numpy"},
     "scipy",
 ]
 full = [
-    "numpy>=1.21.2",  # Does not work before 1.21. No python 3.10 wheel before 1.21.2.
-    "quadprog>=0.1.9, != 0.1.10",  # Doesn't work before 0.1.9, 0.1.10 is yanked
-    "qpsolvers>=1.0.1",  # Does not work before 1.0.1
-    "cvxpy>=1.3.0",  # No Clarabel solver before 1.3.0
-    "ecos>=2.0.14",  # Does not work before 2.0.14
-    "scipy",
+    "torchjd[quadprog_projector,nash_mtl,cagrad,fairgrad]",
 ]
 
 [tool.pytest.ini_options]