diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c94bedc..0c0a5be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -e .
+          pip install -e .[test]
       - name: Test with pytest
         run: |
           python -m pytest -vx
diff --git a/pyproject.toml b/pyproject.toml
index b857492..db0cc17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,9 +26,12 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "ruff",
+    "ipykernel",
+]
+
+test = [
     "pytest",
     "pytest-cov",
-    "ipykernel",
 ]
 
 [project.urls]