diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d8083ba..cf7cb9a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,11 +1,10 @@
 name: CI  # Name of the workflow
 
 on:
-  push:
+  pull_request:
     branches:
       - devel
       - master
-      - feat/OPS-31
 
 jobs:
   test:  # Defines a job called "test"
@@ -21,10 +20,10 @@ jobs:
           python-version: '3.10'
 
       - name: Install dependencies
-        run: poetry install
+        run: pip install -r requirements.txt
 
       - name: Run tests with coverage
-        run: poetry run coverage run -m pytest
+        run: pytest --cov=senju --cov-report=xml
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
diff --git a/senju/__init__.py b/senju/__init__.py
new file mode 100644
index 0000000..e69de29