diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3dcffa3..ccb5322 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,10 +36,10 @@ jobs:
         run: python -m pip install pyyaml
       
       - name: Test python scripts
-        run: |
-          cd custom
-          python -m unittest
-          cd ..
+        working-directory: custom
+        env:
+          PYTHONPATH: src/
+        run: python -m unittest
 
       - name: Set test tag variable as an output
         id: vars
diff --git a/tests/__init__.py b/tests/__init__.py
deleted file mode 100644
index a60ef73..0000000
--- a/tests/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-import sys
-sys.path.insert(0, "src")
\ No newline at end of file