diff --git a/tests/regression_test.py b/tests/regression_test.py
index fd4a2d7..f13b403 100644
--- a/tests/regression_test.py
+++ b/tests/regression_test.py
@@ -59,6 +59,23 @@ def myprint(instr):
     print(f"{datetime.datetime.now()} - {instr}")
 
 
+def download_file(url, filename):
+    response = requests.get(url)
+
+    target_dir = os.path.dirname(filename)
+    if target_dir and not os.path.exists(target_dir):
+        os.makedirs(target_dir)
+
+    # Check if the request was successful
+    if response.status_code == 200:
+        with open(filename, 'wb') as file:
+            file.write(response.content)
+    else:
+        print(f"Failed to download file. Status code: {response.status_code}")
+
+    return filename
+
+
 def download_and_extract_zip(zip_file_name, cache_dir, url, demo_data_dir):
     # Check and construct the full path of the zip file
     zip_file_path = os.path.join(cache_dir, zip_file_name)
@@ -375,19 +392,28 @@ def test_calibrator(self):
         default_baseline_path = os.path.join(PROJECT_DIR, "tests", "sybil_ensemble_v1.4.0_calibrations.json")
         baseline_path = os.environ.get("SYBIL_TEST_BASELINE_PATH", default_baseline_path)
 
-        new_cal_dict_path = os.environ.get("SYBIL_TEST_COMPARE_PATH", "~/.sybil/sybil_ensemble_simple_calibrator.json")
-        new_cal_dict_path = os.path.expanduser(new_cal_dict_path)
-        raw_new_cal_dict = json.load(open(new_cal_dict_path, "r"))
-        new_cal_dict = {}
-        for key, val in raw_new_cal_dict.items():
-            new_cal_dict[key] = sybil.models.calibrator.SimpleClassifierGroup.from_json(val)
+        if not os.path.exists(baseline_path) and baseline_path == default_baseline_path:
+            os.makedirs(os.path.dirname(default_baseline_path), exist_ok=True)
+            reference_calibrations_url = "https://www.dropbox.com/scl/fi/2fx6ukmozia7y3u8mie97/sybil_ensemble_v1.4.0_calibrations.json?rlkey=tquids9qo4mkkuf315nqdq0o7&dl=1"
+            download_file(reference_calibrations_url, default_baseline_path)
+
+        default_cal_dict_path = os.path.expanduser("~/.sybil/sybil_ensemble_simple_calibrator.json")
+        compare_calibrator_path = os.environ.get("SYBIL_TEST_COMPARE_PATH", default_cal_dict_path)
+        compare_calibrator_path = os.path.expanduser(compare_calibrator_path)
+        if not os.path.exists(compare_calibrator_path) and compare_calibrator_path == default_cal_dict_path:
+            test_model = Sybil("sybil_ensemble")
+
+        raw_calibrator_dict = json.load(open(compare_calibrator_path, "r"))
+        new_calibrator_dict = {}
+        for key, val in raw_calibrator_dict.items():
+            new_calibrator_dict[key] = sybil.models.calibrator.SimpleClassifierGroup.from_json(val)
 
         baseline_preds = json.load(open(baseline_path, "r"))
         test_probs = np.array(baseline_preds["x"]).reshape(-1, 1)
         year_keys = [key for key in baseline_preds.keys() if key.startswith("Year")]
         for year_key in year_keys:
             baseline_scores = np.array(baseline_preds[year_key]).flatten()
-            new_cal = new_cal_dict[year_key]
+            new_cal = new_calibrator_dict[year_key]
             new_scores = new_cal.predict_proba(test_probs).flatten()
 
             self.assertTrue(np.allclose(baseline_scores, new_scores, atol=1e-10), f"Calibration mismatch for {year_key}")