diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eea0ab7..4a6b954 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,15 +39,12 @@ jobs:
         pip install dist/*.whl
       shell: bash
 
-    - name: Install test dependencies
-      run: pip install tox
-
     - name: Run unit tests
       run: |
         git config --global user.email "you@example.com"
         git config --global user.name "Your Name"
         cd wpiformat
-        tox
+        pytest
 
     - name: wpiformat - whole repo
       run: |
diff --git a/wpiformat/tox.ini b/wpiformat/tox.ini
deleted file mode 100644
index 099e16e..0000000
--- a/wpiformat/tox.ini
+++ /dev/null
@@ -1,12 +0,0 @@
-[tox]
-min_version = 4.0
-env_list =
-  py38
-  py39
-  py310
-  py311
-  py312
-
-[testenv]
-deps = pytest
-commands = pytest