diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6dd84e0..c32638c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,7 +34,8 @@ jobs:
         pip install git+https://github.com/MP-Gadget/pfft-python
         pip install git+https://github.com/MP-Gadget/pmesh
         pip install git+https://github.com/ASKabalan/fastpm-python --no-build-isolation
-        pip install .[test]
+        pip install -r requirements-test.txt
+        pip install .
 
     - name: Run Single Device Tests
       run: |
diff --git a/.gitignore b/.gitignore
index baef139..e59d1f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -132,3 +132,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# Hide version file
+_version.py
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 80377f9..55fbdcd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,19 +13,6 @@ license = { file = "LICENSE" }
 urls = { "Homepage" = "https://github.com/DifferentiableUniverseInitiative/JaxPM" }
 dependencies = ["jax_cosmo", "jax>=0.4.30", "jaxdecomp>=0.2.2"]
 
-[project.optional-dependencies]
-test = [
-    "jax>=0.4.30",
-    "numpy",
-    "jax_cosmo",
-    "jaxdecomp>=0.2.2",
-    "pytest>=8.0.0",
-    "pfft-python @ git+https://github.com/MP-Gadget/pfft-python",
-    "pmesh @ git+https://github.com/MP-Gadget/pmesh",
-    "fastpm @ git+https://github.com/ASKabalan/fastpm-python",
-    "diffrax"
-]
-
 [tool.setuptools]
 packages = ["jaxpm"]
 
diff --git a/requirements-test.txt b/requirements-test.txt
new file mode 100644
index 0000000..cfadc24
--- /dev/null
+++ b/requirements-test.txt
@@ -0,0 +1,5 @@
+pytest>=8.0.0
+diffrax
+pfft-python @ git+https://github.com/MP-Gadget/pfft-python
+pmesh @ git+https://github.com/MP-Gadget/pmesh
+fastpm @ git+https://github.com/ASKabalan/fastpm-python
\ No newline at end of file