diff --git a/.github/workflows/run_tests.yaml b/.github/workflows/run_tests.yaml
index 551fcee0..c8260ce5 100644
--- a/.github/workflows/run_tests.yaml
+++ b/.github/workflows/run_tests.yaml
@@ -36,7 +36,7 @@ jobs:
       - name: Install fmu-sumo
         run: >
           python -m pip install --upgrade pip &&
-          python -m pip install .
+          python -m pip install .[test]
       - name: Run tests
         shell: bash
         run: |
@@ -46,5 +46,4 @@ jobs:
           access_token=$(az account get-access-token --scope api://88d2b022-3539-4dda-9e66-853801334a86/.default --query accessToken --output tsv)
           export ACCESS_TOKEN=$access_token
 
-          pip install pytest>=6.1.1 pytest-timeout
           pytest -s --timeout=300
diff --git a/pyproject.toml b/pyproject.toml
index 92a0cca0..5b93a6f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ Repository = "https://github.com/equinor/fmu-sumo"
 
 [project.optional-dependencies]
 dev = ["black", "flake8", "pytest"]
+test = ["pytest", "pytest-timeout"]
 docs = [
   "sphinx==6.2.1",
   "sphinx-rtd-theme",