diff --git a/Scripts/deduplicate.py b/Scripts/deduplicate.py
index 4f1a5a1..8f27842 100755
--- a/Scripts/deduplicate.py
+++ b/Scripts/deduplicate.py
@@ -14,8 +14,6 @@
 from collections.abc import Iterable
 
 # Add current directory to path to allow importing common if run from elsewhere
-if str(Path(__file__).parent) not in sys.path:
-    sys.path.append(str(Path(__file__).parent))
 
 from common import is_valid_domain, write_lines
 
diff --git a/Scripts/move-pure-domains.py b/Scripts/move-pure-domains.py
index bc6dd89..a7bc951 100644
--- a/Scripts/move-pure-domains.py
+++ b/Scripts/move-pure-domains.py
@@ -9,8 +9,6 @@
 from collections import defaultdict
 
 # Import common utilities
-if str(Path(__file__).parent) not in sys.path:
-    sys.path.append(str(Path(__file__).parent))
 
 from common import is_valid_domain, read_lines, write_lines
 
diff --git a/Scripts/test_common.py b/Scripts/test_common.py
index 86e8ef1..50a7076 100644
--- a/Scripts/test_common.py
+++ b/Scripts/test_common.py
@@ -1,11 +1,8 @@
 import unittest
-import sys
 from pathlib import Path
 import hashlib
 
 # Add current directory to path
-if str(Path(__file__).parent) not in sys.path:
-    sys.path.append(str(Path(__file__).parent))
 
 from common import sanitize_filename, is_valid_domain, is_adguard_rule
 
diff --git a/Scripts/test_deduplicate.py b/Scripts/test_deduplicate.py
index 5e8c577..92eeaaa 100644
--- a/Scripts/test_deduplicate.py
+++ b/Scripts/test_deduplicate.py
@@ -1,10 +1,6 @@
 import unittest
-import sys
-from pathlib import Path
 
 # Add current directory to path to allow importing deduplicate
-if str(Path(__file__).parent) not in sys.path:
-    sys.path.append(str(Path(__file__).parent))
 
 from deduplicate import process_content
 
diff --git a/Scripts/test_is_pure_domain_logic.py b/Scripts/test_is_pure_domain_logic.py
index 7dc4ad8..e9b679f 100644
--- a/Scripts/test_is_pure_domain_logic.py
+++ b/Scripts/test_is_pure_domain_logic.py
@@ -1,13 +1,6 @@
 import unittest
-import sys
-from pathlib import Path
 import importlib
 
-# Add Scripts to path
-scripts_dir = Path(__file__).parent
-if str(scripts_dir) not in sys.path:
-    sys.path.append(str(scripts_dir))
-
 # Import ADGUARD_INDICATORS from common
 from common import ADGUARD_INDICATORS
 
diff --git a/Scripts/test_update_lists.py b/Scripts/test_update_lists.py
index 2654d93..5b20097 100644
--- a/Scripts/test_update_lists.py
+++ b/Scripts/test_update_lists.py
@@ -20,7 +20,9 @@ class ClientError(Exception):
 sys.modules["aiohttp"] = aiohttp_mock
 sys.modules["aiofiles"] = MagicMock()
 
-spec = importlib.util.spec_from_file_location("update_lists", "Scripts/update-lists.py")
+spec = importlib.util.spec_from_file_location(
+    "update_lists", str(Path(__file__).parent / "update-lists.py")
+)
 update_lists = importlib.util.module_from_spec(spec)
 sys.modules["update_lists"] = update_lists
 spec.loader.exec_module(update_lists)
diff --git a/Scripts/update-lists.py b/Scripts/update-lists.py
index 6bc4d15..fda7dba 100644
--- a/Scripts/update-lists.py
+++ b/Scripts/update-lists.py
@@ -21,8 +21,6 @@
 import aiofiles
 
 # Import common utilities
-if str(Path(__file__).parent) not in sys.path:
-    sys.path.append(str(Path(__file__).parent))
 
 from common import sanitize_filename