diff --git a/asap-query-engine/src/engines/warm_tier/mod.rs b/asap-query-engine/src/engines/warm_tier/mod.rs
index 94156df3..bbac7d2c 100644
--- a/asap-query-engine/src/engines/warm_tier/mod.rs
+++ b/asap-query-engine/src/engines/warm_tier/mod.rs
@@ -4,7 +4,7 @@
 //! [`crate::engines::simple::engine::SimpleEngine`]'s
 //! `QueryEngine::execute` adapter: parse the PromQL, extract
 //! `(metric_name, label_keys)`, look up candidate sids via
-//! [`crate::stores::sketch_index::SketchIndex::instances_matching`],
+//! [`crate::stores::sketch_db::sketch_index::SketchIndex::instances_matching`],
 //! and classify each sid. On `Ghost`/`Unknown`, return
 //! `EngineError::CapabilityMiss(SketchWarmTier, …)` so the
 //! `EngineRouter` fails over to the archive engine.
@@ -14,7 +14,7 @@
 //! that fall-through with **direct sketch evaluation** from
 //! [`SketchIndex::query_range`]'s output: deserialize each
 //! window's sketch state, dispatch on the per-instance
-//! [`crate::stores::sketch_index::Capability`], and reduce to a
+//! [`crate::stores::sketch_db::sketch_index::Capability`], and reduce to a
 //! per-window scalar via the canonical sketch query (DDSketch /
 //! KLL → quantile, HLL → cardinality estimate, CMS / CountSketch
 //! → frequency point query, CMS-with-heap → top-k items).
diff --git a/asap-query-engine/src/engines/warm_tier/sketch_reducer.rs b/asap-query-engine/src/engines/warm_tier/sketch_reducer.rs
index d625bbf5..02efd5de 100644
--- a/asap-query-engine/src/engines/warm_tier/sketch_reducer.rs
+++ b/asap-query-engine/src/engines/warm_tier/sketch_reducer.rs
@@ -57,7 +57,7 @@ use asap_sketchlib::sketches::kll::KllSketch;
 use asap_sketchlib::sketches::countminsketch::CountMinSketch;
 use asap_sketchlib::sketches::countsketch::CountSketch;
 
-use crate::stores::sketch_index::{
+use crate::stores::sketch_db::sketch_index::{
     Capability, SketchEncoding, SketchIndex, SketchInstanceMetadata, SketchKindHandle,
     SketchSampleState,
 };
diff --git a/asap-query-engine/src/engines/warm_tier/tests.rs b/asap-query-engine/src/engines/warm_tier/tests.rs
index 0bbd573d..38822eb8 100644
--- a/asap-query-engine/src/engines/warm_tier/tests.rs
+++ b/asap-query-engine/src/engines/warm_tier/tests.rs
@@ -16,7 +16,7 @@ use asap_sketchlib::sketches::ddsketch::DdSketch;
 use asap_sketchlib::sketches::hll::{HllSketch, HllVariant};
 
 use crate::engines::warm_tier::{SketchReducer, WarmTierError};
-use crate::stores::sketch_index::{
+use crate::stores::sketch_db::sketch_index::{
     AccuracyBound, Capability, SketchConfig, SketchEncoding, SketchIndex,
     SketchInstanceMetadata, SketchKindHandle, SketchSampleState,
 };