diff --git a/src/cerbero_bite/core/adaptive_threshold.py b/src/cerbero_bite/core/adaptive_threshold.py
index 0fbc334..0a77133 100644
--- a/src/cerbero_bite/core/adaptive_threshold.py
+++ b/src/cerbero_bite/core/adaptive_threshold.py
@@ -8,8 +8,8 @@ Deterministic, no I/O. La query del repository è effettuata dal caller
 
 from __future__ import annotations
 
+from collections.abc import Sequence
 from decimal import Decimal
-from typing import Sequence
 
 __all__ = ["compute_adaptive_threshold"]
 
diff --git a/src/cerbero_bite/core/entry_validator.py b/src/cerbero_bite/core/entry_validator.py
index a823a9a..c9cd5ae 100644
--- a/src/cerbero_bite/core/entry_validator.py
+++ b/src/cerbero_bite/core/entry_validator.py
@@ -15,6 +15,7 @@ from decimal import Decimal
 from pydantic import BaseModel, ConfigDict
 
 from cerbero_bite.config import SpreadType, StrategyConfig
+from cerbero_bite.core.adaptive_threshold import compute_adaptive_threshold
 
 __all__ = [
     "EntryContext",
@@ -159,10 +160,6 @@ def validate_entry(ctx: EntryContext, cfg: StrategyConfig) -> EntryDecision:
     # soglia statica `iv_minus_rv_min`.
     if entry_cfg.iv_minus_rv_filter_enabled and ctx.iv_minus_rv is not None:
         if entry_cfg.iv_minus_rv_adaptive_enabled:
-            from cerbero_bite.core.adaptive_threshold import (
-                compute_adaptive_threshold,
-            )
-
             threshold = compute_adaptive_threshold(
                 history=ctx.iv_rv_history,
                 percentile=entry_cfg.iv_minus_rv_percentile,