diff --git a/runs/fidelity-headroom/prepare_pilot_simulator.py b/runs/fidelity-headroom/prepare_pilot_simulator.py
index c3d77fb..fc84bde 100644
--- a/runs/fidelity-headroom/prepare_pilot_simulator.py
+++ b/runs/fidelity-headroom/prepare_pilot_simulator.py
@@ -32,6 +32,9 @@ PRIMARY_ROLES = ("low1", "high1")
 
 
 def load_module(path: Path):
+    module_root = str(path.parent.resolve())
+    if module_root not in sys.path:
+        sys.path.insert(0, module_root)
     spec = importlib.util.spec_from_file_location("simfid_s2rb_prepare", path)
     if spec is None or spec.loader is None:
         raise ImportError(path)
diff --git a/runs/fidelity-headroom/run_pilot_simulator.py b/runs/fidelity-headroom/run_pilot_simulator.py
index d393916..6db18b4 100644
--- a/runs/fidelity-headroom/run_pilot_simulator.py
+++ b/runs/fidelity-headroom/run_pilot_simulator.py
@@ -16,6 +16,9 @@ from typing import Any
 
 
 def load_module(name: str, path: Path):
+    module_root = str(path.parent.resolve())
+    if module_root not in sys.path:
+        sys.path.insert(0, module_root)
     spec = importlib.util.spec_from_file_location(name, path)
     if spec is None or spec.loader is None:
         raise ImportError(path)
diff --git a/runs/fidelity-headroom/test_strong_pilot.py b/runs/fidelity-headroom/test_strong_pilot.py
index 48f6089..921c2b3 100644
--- a/runs/fidelity-headroom/test_strong_pilot.py
+++ b/runs/fidelity-headroom/test_strong_pilot.py
@@ -8,6 +8,8 @@ from pathlib import Path
 import numpy as np
 
 from analyze_prefixes import PrefixExample
+from prepare_pilot_simulator import load_module as load_prepare_module
+from run_pilot_simulator import load_module as load_run_module
 from analyze_strong_pilot import (
     fit_model,
     load_pilot_simulator,
@@ -68,6 +70,19 @@ def main() -> None:
         features, red_flags = load_pilot_simulator(path)
     assert len(features) == 12
     assert red_flags == []
+
+    with tempfile.TemporaryDirectory() as temporary:
+        root = Path(temporary)
+        (root / "prepare_dependency.py").write_text("VALUE = 17\n", encoding="utf-8")
+        (root / "prepare_target.py").write_text(
+            "from prepare_dependency import VALUE\n", encoding="utf-8"
+        )
+        assert load_prepare_module(root / "prepare_target.py").VALUE == 17
+        (root / "run_dependency.py").write_text("VALUE = 23\n", encoding="utf-8")
+        (root / "run_target.py").write_text(
+            "from run_dependency import VALUE\n", encoding="utf-8"
+        )
+        assert load_run_module("run_target", root / "run_target.py").VALUE == 23
     print("fidelity strong pilot: PASS")