diff --git a/crates/ingestd/src/schema_evolution.rs b/crates/ingestd/src/schema_evolution.rs
index fa7db93..1f7f8e9 100644
--- a/crates/ingestd/src/schema_evolution.rs
+++ b/crates/ingestd/src/schema_evolution.rs
@@ -2,12 +2,9 @@
 /// When a source changes format (columns renamed, added, removed, type changed),
 /// the system detects the diff and can auto-map using AI or heuristic matching.
 
-#[allow(unused_imports)]
-use arrow::datatypes::{DataType, Schema, SchemaRef};
+use arrow::datatypes::{DataType, SchemaRef};
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-#[allow(unused_imports)]
-use std::sync::Arc;
 
 /// A detected change between two schema versions.
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -225,7 +222,8 @@ fn find_similar_column<'a>(
 #[cfg(test)]
 mod tests {
     use super::*;
-    use arrow::datatypes::Field;
+    use arrow::datatypes::{Field, Schema};
+    use std::sync::Arc;
 
     fn schema(fields: Vec<(&str, DataType)>) -> SchemaRef {
         Arc::new(Schema::new(