diff --git a/kartograf/rpki/parse.py b/kartograf/rpki/parse.py
index e828e21..47f72ea 100644
--- a/kartograf/rpki/parse.py
+++ b/kartograf/rpki/parse.py
@@ -1,5 +1,5 @@
 import json
-import os
+from pathlib import Path
 from typing import Dict
 
 from kartograf.bogon import (
@@ -13,8 +13,8 @@
 
 @timed
 def parse_rpki(context):
-    raw_input = os.path.join(context.out_dir_rpki, "rpki_raw.json")
-    rpki_res = os.path.join(context.out_dir_rpki, "rpki_final.txt")
+    raw_input = Path(context.out_dir_rpki) / "rpki_raw.json"
+    rpki_res = Path(context.out_dir_rpki) / "rpki_final.txt"
 
     output_cache: Dict[str, [str, str]] = {}
 
diff --git a/tests/context.py b/tests/context.py
index db05a9c..f9789e3 100644
--- a/tests/context.py
+++ b/tests/context.py
@@ -1,6 +1,7 @@
 import csv
 import json
 import os
+from pathlib import Path
 
 from types import SimpleNamespace
 from kartograf.context import Context
@@ -32,25 +33,26 @@ def load_rpki_csv_to_json(self, csv_path):
             row["vrps"] = vrps
             rpki_data.append(row)
 
-    output_path = os.path.join(self.out_dir_rpki, 'rpki_raw.json')
+    output_path = Path(self.out_dir_rpki) / 'rpki_raw.json'
     with open(output_path, 'w') as jsonfile:
         json.dump(rpki_data, jsonfile, indent=2)
 
 
 def create_test_context(tmp_path, epoch):
-    current_path = os.getcwd()
+    current_path = Path.cwd()
+    fixtures_path = Path(__file__).parent / "data"
     os.chdir(tmp_path)  # Use temporary directory
 
     TEST_ARGS.epoch = epoch
     context = Context(TEST_ARGS)
-    context.data_dir = os.path.join(tmp_path, "data/", context.epoch_dir)
-    context.data_dir_rpki = os.path.join(context.data_dir, "rpki/")
-    context.out_dir = os.path.join(tmp_path, "out/", context.epoch_dir)
-    context.out_dir_rpki = os.path.join(context.out_dir, "rpki/")
+    context.data_dir = Path(tmp_path) / "data" / context.epoch_dir
+    context.data_dir_rpki = Path(context.data_dir) / "rpki"
+    context.out_dir = Path(tmp_path) / "out" / context.epoch_dir
+    context.out_dir_rpki = Path(context.out_dir) / "rpki"
 
-    os.makedirs(context.data_dir_rpki, exist_ok=True)
-    os.makedirs(context.out_dir_rpki, exist_ok=True)
+    Path.mkdir(context.data_dir_rpki, exist_ok=True, parents=True)
+    Path.mkdir(context.out_dir_rpki, exist_ok=True, parents=True)
 
-    load_rpki_csv_to_json(context, os.path.join(current_path, "tests/data/rpki_raw.csv"))
+    load_rpki_csv_to_json(context, fixtures_path / "rpki_raw.csv")
     os.chdir(current_path)
     return context
diff --git a/tests/test_merge.py b/tests/test_merge.py
index 79c2b6e..09c8729 100644
--- a/tests/test_merge.py
+++ b/tests/test_merge.py
@@ -1,7 +1,7 @@
 """
 Test merging multiple sets of networks, as if they were independent AS files.
 """
-import os
+from pathlib import Path
 
 from kartograf.merge import general_merge
 
@@ -39,10 +39,10 @@ def test_merge_from_fixtures(tmp_path):
     '''
     Assert that general_merge merges subnets correctly.
     '''
-    data_dir = os.path.join(os.path.dirname(__file__), "data")
-    base_nets, base_subnet_count = __read_test_vectors(os.path.join(data_dir, "base_file.csv"))
+    data_dir = Path(__file__).parent / "data"
+    base_nets, base_subnet_count = __read_test_vectors(data_dir / "base_file.csv")
     base_path = tmp_path / "base.txt"
-    extra_nets, extra_subnet_count = __read_test_vectors(os.path.join(data_dir, "extra_file.csv"))
+    extra_nets, extra_subnet_count = __read_test_vectors(data_dir / "extra_file.csv")
     extra_path = tmp_path / "extra.txt"
     # write the networks to disk, generating ASNs for each network
     generate_ip_file(base_path, build_file_lines(base_nets, generate_asns(len(base_nets))))
diff --git a/tests/test_rpki_parser.py b/tests/test_rpki_parser.py
index d51543d..6a82ba3 100644
--- a/tests/test_rpki_parser.py
+++ b/tests/test_rpki_parser.py
@@ -1,5 +1,5 @@
 import json
-import os
+from pathlib import Path
 
 from kartograf.rpki.parse import parse_rpki
 from .context import create_test_context
@@ -27,11 +27,11 @@ def test_roa_validations(tmp_path, capsys):
     parse_rpki(context)
 
     # Check that rpki_final.txt was created
-    final_path = os.path.join(context.out_dir_rpki, "rpki_final.txt")
-    assert os.path.exists(final_path), "rpki_final.txt should exist"
+    final_path = Path(context.out_dir_rpki) / "rpki_final.txt"
+    assert Path.exists(final_path),  "rpki_final.txt should exist"
 
     # Read the raw JSON to compare counts
-    with open(os.path.join(context.out_dir_rpki, "rpki_raw.json"), "r") as f:
+    with open(Path(context.out_dir_rpki) / "rpki_raw.json", "r") as f:
         raw_data = json.load(f)
 
     # Count entries in final output
@@ -79,14 +79,14 @@ def test_roa_incompletes(tmp_path, capsys):
     ]
 
     # Write test data to rpki_raw.json
-    with open(os.path.join(context.out_dir_rpki, "rpki_raw.json"), "w") as f:
+    with open(Path(context.out_dir_rpki) /  "rpki_raw.json", "w") as f:
         json.dump(test_data, f)
 
     parse_rpki(context)
 
     # Check that rpki_final.txt was created
-    final_path = os.path.join(context.out_dir_rpki, "rpki_final.txt")
-    assert os.path.exists(final_path), "rpki_final.txt should exist"
+    final_path = Path(context.out_dir_rpki) / "rpki_final.txt"
+    assert Path.exists(final_path), "rpki_final.txt should exist"
 
     # Count entries in final output
     with open(final_path, "r") as f: