diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index dcbccf36d..885f5e719 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -23,6 +23,16 @@ jobs:
       with:
         python-version: '3.9'
 
+    - name: Install apt dependencies
+      if: ${{ runner.os == 'Linux' }}
+      run: |
+        sudo apt-get install libsuitesparse-dev
+
+    - name: Install brew dependencies
+      if: ${{ runner.os == 'macOS' }}
+      run: |
+        brew install suite-sparse
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -44,6 +54,7 @@ jobs:
       options: --gpus="device=12"
     steps:
     - uses: actions/checkout@v3
+
     - name: Install dependencies
       # `jax[cuda]<0.4` because of Docker issues: https://github.com/google/jax/issues/13758
       # `flax<0.6.5` because it requires `jax>=0.4.2`
@@ -80,6 +91,16 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    - name: Install apt dependencies
+      if: ${{ runner.os == 'Linux' }}
+      run: |
+        sudo apt-get install libsuitesparse-dev
+
+    - name: Install brew dependencies
+      if: ${{ runner.os == 'macOS' }}
+      run: |
+        brew install suite-sparse
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/pyproject.toml b/pyproject.toml
index 004edfdb3..584a30818 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,9 +74,6 @@ test = [
     "networkx>=2.5",
     "scikit-learn>=1.0"
 ]
-experimental = [
-    "scikit-sparse>=0.4.6",
-]
 docs = [
     "sphinx>=4.0",
     "ipython>=7.20.0",
@@ -177,6 +174,7 @@ legacy_tox_ini = """
     [testenv]
     extras = test
     pass_env = CUDA_*,PYTEST_*,CI
+    deps = py{38,39,310}: scikit-sparse>=0.4.6
     commands =
         gpu: pip install "jax[cuda]" -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
         python -m pytest {tty:--color=yes} {posargs: \