diff --git a/Cargo.lock b/Cargo.lock
index 7b3de4a6a..06bd9c234 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3312,15 +3312,6 @@ version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
-[[package]]
-name = "lru"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37ee39891760e7d94734f6f63fedc29a2e4a152f836120753a72503f09fcf904"
-dependencies = [
- "hashbrown 0.14.5",
-]
-
 [[package]]
 name = "lzma-rs"
 version = "0.3.0"
@@ -3584,7 +3575,6 @@ dependencies = [
  "json-depth-checker",
  "levenshtein_automata",
  "liquid",
- "lru",
  "maplit",
  "md5",
  "meili-snap",
diff --git a/Cargo.toml b/Cargo.toml
index a73ac67ef..1d25b9795 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,26 +44,5 @@ opt-level = 3
 [profile.dev.package.roaring]
 opt-level = 3
 
-[profile.dev.package.lindera-ipadic-builder]
-opt-level = 3
-[profile.dev.package.encoding]
-opt-level = 3
-[profile.dev.package.yada]
-opt-level = 3
-
-[profile.release.package.lindera-ipadic-builder]
-opt-level = 3
-[profile.release.package.encoding]
-opt-level = 3
-[profile.release.package.yada]
-opt-level = 3
-
-[profile.bench.package.lindera-ipadic-builder]
-opt-level = 3
-[profile.bench.package.encoding]
-opt-level = 3
-[profile.bench.package.yada]
-opt-level = 3
-
 [patch.crates-io]
 roaring = { git = "https://github.com/RoaringBitmap/roaring-rs", branch = "clone-iter-slice" }
diff --git a/milli/Cargo.toml b/milli/Cargo.toml
index 19986de01..bae3dd64b 100644
--- a/milli/Cargo.toml
+++ b/milli/Cargo.toml
@@ -40,7 +40,6 @@ heed = { version = "0.20.3", default-features = false, features = [
 indexmap = { version = "2.2.6", features = ["serde"] }
 json-depth-checker = { path = "../json-depth-checker" }
 levenshtein_automata = { version = "0.2.1", features = ["fst_automaton"] }
-lru = "0.12.3"
 memchr = "2.5.0"
 memmap2 = "0.9.4"
 obkv = { git = "https://github.com/kerollmops/obkv", branch = "unsized-kvreader" }
diff --git a/milli/src/update/new/extract/cache.rs b/milli/src/update/new/extract/cache.rs
index 572c81a55..4f6f30e70 100644
--- a/milli/src/update/new/extract/cache.rs
+++ b/milli/src/update/new/extract/cache.rs
@@ -2,16 +2,16 @@ use std::mem;
 use std::num::NonZeroUsize;
 
 use grenad::{MergeFunction, Sorter};
-use lru::LruCache;
 use roaring::RoaringBitmap;
 use smallvec::SmallVec;
 
+use super::lru::Lru;
 use crate::update::del_add::{DelAdd, KvWriterDelAdd};
 use crate::CboRoaringBitmapCodec;
 
 #[derive(Debug)]
 pub struct CboCachedSorter<MF> {
-    cache: lru::LruCache<SmallVec<[u8; 20]>, DelAddRoaringBitmap>,
+    cache: Lru<SmallVec<[u8; 20]>, DelAddRoaringBitmap>,
     sorter: Sorter<MF>,
     deladd_buffer: Vec<u8>,
     cbo_buffer: Vec<u8>,
@@ -22,7 +22,7 @@ pub struct CboCachedSorter<MF> {
 impl<MF> CboCachedSorter<MF> {
     pub fn new(cap: NonZeroUsize, sorter: Sorter<MF>) -> Self {
         CboCachedSorter {
-            cache: lru::LruCache::new(cap),
+            cache: Lru::new(cap),
             sorter,
             deladd_buffer: Vec::new(),
             cbo_buffer: Vec::new(),
@@ -171,7 +171,7 @@ impl<MF: MergeFunction> CboCachedSorter<MF> {
     }
 
     pub fn into_sorter(mut self) -> grenad::Result<Sorter<MF>, MF::Error> {
-        let default_arc = LruCache::new(NonZeroUsize::MIN);
+        let default_arc = Lru::new(NonZeroUsize::MIN);
         for (key, deladd) in mem::replace(&mut self.cache, default_arc) {
             self.write_entry(key, deladd)?;
         }
diff --git a/milli/src/update/new/lru.rs b/milli/src/update/new/extract/lru.rs
similarity index 99%
rename from milli/src/update/new/lru.rs
rename to milli/src/update/new/extract/lru.rs
index fef108753..7c13d9350 100644
--- a/milli/src/update/new/lru.rs
+++ b/milli/src/update/new/extract/lru.rs
@@ -7,6 +7,7 @@ use std::num::NonZeroUsize;
 use hashbrown::hash_map::{DefaultHashBuilder, Entry};
 use hashbrown::HashMap;
 
+#[derive(Debug)]
 pub struct Lru<K, V, S = DefaultHashBuilder> {
     lookup: HashMap<K, usize, S>,
     storage: FixedSizeList<LruNode<K, V>>,
@@ -104,17 +105,20 @@ impl<K, V> Iterator for IntoIter<K, V> {
     }
 }
 
+#[derive(Debug)]
 struct LruNode<K, V> {
     key: K,
     value: V,
 }
 
+#[derive(Debug)]
 struct FixedSizeListNode<T> {
     prev: usize,
     next: usize,
     data: T,
 }
 
+#[derive(Debug)]
 struct FixedSizeList<T> {
     nodes: Box<[Option<FixedSizeListNode<T>>]>,
     // An un-ordered set of indices that are not in use in `nodes`.
diff --git a/milli/src/update/new/extract/mod.rs b/milli/src/update/new/extract/mod.rs
index 3836f9957..d1f6bb787 100644
--- a/milli/src/update/new/extract/mod.rs
+++ b/milli/src/update/new/extract/mod.rs
@@ -1,5 +1,6 @@
 mod cache;
 mod faceted;
+mod lru;
 mod searchable;
 
 use std::fs::File;
@@ -9,12 +10,9 @@ use grenad::Merger;
 use rayon::iter::IntoParallelIterator;
 pub use searchable::*;
 
-use crate::{
-    update::{GrenadParameters, MergeDeladdCboRoaringBitmaps},
-    GlobalFieldsIdsMap, Index, Result,
-};
-
 use super::DocumentChange;
+use crate::update::{GrenadParameters, MergeDeladdCboRoaringBitmaps};
+use crate::{GlobalFieldsIdsMap, Index, Result};
 
 pub trait DocidsExtractor {
     fn run_extraction(
diff --git a/milli/src/update/new/mod.rs b/milli/src/update/new/mod.rs
index b4878a8fe..dedd89497 100644
--- a/milli/src/update/new/mod.rs
+++ b/milli/src/update/new/mod.rs
@@ -10,7 +10,6 @@ mod document_change;
 mod extract;
 pub mod indexer;
 mod items_pool;
-mod lru;
 mod merger;
 mod top_level_map;
 mod word_fst_builder;