diff --git a/meilidb-core/src/update/documents_addition.rs b/meilidb-core/src/update/documents_addition.rs
index c45750a59..9bc2c8920 100644
--- a/meilidb-core/src/update/documents_addition.rs
+++ b/meilidb-core/src/update/documents_addition.rs
@@ -8,7 +8,7 @@ use serde::Serialize;
 use crate::raw_indexer::RawIndexer;
 use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
 use crate::store;
-use crate::update::{push_documents_addition, apply_documents_deletion};
+use crate::update::{Update, next_update_id, apply_documents_deletion};
 use crate::{MResult, Error, RankedMap};
 
 pub struct DocumentsAddition<D> {
@@ -59,6 +59,28 @@ impl<D> Extend<D> for DocumentsAddition<D> {
     }
 }
 
+pub fn push_documents_addition<D: serde::Serialize>(
+    writer: &mut rkv::Writer,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    addition: Vec<D>,
+) -> MResult<u64>
+{
+    let mut values = Vec::with_capacity(addition.len());
+    for add in addition {
+        let vec = rmp_serde::to_vec_named(&add)?;
+        let add = rmp_serde::from_read(&vec[..])?;
+        values.push(add);
+    }
+
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::DocumentsAddition(values);
+    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
+
 pub fn apply_documents_addition(
     writer: &mut rkv::Writer,
     main_store: store::Main,
diff --git a/meilidb-core/src/update/documents_deletion.rs b/meilidb-core/src/update/documents_deletion.rs
index 10f9550fe..d4e703aa8 100644
--- a/meilidb-core/src/update/documents_deletion.rs
+++ b/meilidb-core/src/update/documents_deletion.rs
@@ -6,7 +6,7 @@ use sdset::{SetBuf, SetOperation, duo::DifferenceByKey};
 
 use crate::{DocumentId, RankedMap, MResult, Error};
 use crate::serde::extract_document_id;
-use crate::update::push_documents_deletion;
+use crate::update::{Update, next_update_id};
 use crate::store;
 
 pub struct DocumentsDeletion {
@@ -69,6 +69,21 @@ impl Extend<DocumentId> for DocumentsDeletion {
     }
 }
 
+pub fn push_documents_deletion(
+    writer: &mut rkv::Writer,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    deletion: Vec<DocumentId>,
+) -> MResult<u64>
+{
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::DocumentsDeletion(deletion);
+    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
+
 pub fn apply_documents_deletion(
     writer: &mut rkv::Writer,
     main_store: store::Main,
diff --git a/meilidb-core/src/update/mod.rs b/meilidb-core/src/update/mod.rs
index 0e9b6b512..0d2504115 100644
--- a/meilidb-core/src/update/mod.rs
+++ b/meilidb-core/src/update/mod.rs
@@ -6,12 +6,13 @@ mod synonyms_deletion;
 
 pub use self::documents_addition::{DocumentsAddition, apply_documents_addition};
 pub use self::documents_deletion::{DocumentsDeletion, apply_documents_deletion};
-pub use self::schema_update::apply_schema_update;
+pub use self::schema_update::{apply_schema_update, push_schema_update};
 pub use self::synonyms_addition::{SynonymsAddition, apply_synonyms_addition};
 pub use self::synonyms_deletion::{SynonymsDeletion, apply_synonyms_deletion};
 
 use std::time::{Duration, Instant};
 use std::collections::BTreeMap;
+use std::cmp;
 
 use log::debug;
 use serde::{Serialize, Deserialize};
@@ -77,11 +78,11 @@ pub fn update_status<T: rkv::Readable>(
     }
 }
 
-fn biggest_update_id(
+pub fn next_update_id(
     writer: &mut rkv::Writer,
     updates_store: store::Updates,
     updates_results_store: store::UpdatesResults,
-) -> MResult<Option<u64>>
+) -> MResult<u64>
 {
     let last_update_id = updates_store.last_update_id(writer)?;
     let last_update_id = last_update_id.map(|(n, _)| n);
@@ -89,106 +90,10 @@ fn biggest_update_id(
     let last_update_results_id = updates_results_store.last_update_id(writer)?;
     let last_update_results_id = last_update_results_id.map(|(n, _)| n);
 
-    let max = last_update_id.max(last_update_results_id);
+    let max_update_id = cmp::max(last_update_id, last_update_results_id);
+    let new_update_id = max_update_id.map_or(0, |n| n + 1);
 
-    Ok(max)
-}
-
-pub fn next_update_id(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-) -> MResult<u64>
-{
-    let last_update_id = biggest_update_id(
-        writer,
-        updates_store,
-        updates_results_store
-    )?;
-
-    Ok(last_update_id.map_or(0, |n| n + 1))
-}
-
-pub fn push_schema_update(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    schema: Schema,
-) -> MResult<u64>
-{
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::SchemaUpdate(schema);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn push_documents_addition<D: serde::Serialize>(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    addition: Vec<D>,
-) -> MResult<u64>
-{
-    let mut values = Vec::with_capacity(addition.len());
-    for add in addition {
-        let vec = rmp_serde::to_vec_named(&add)?;
-        let add = rmp_serde::from_read(&vec[..])?;
-        values.push(add);
-    }
-
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::DocumentsAddition(values);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn push_documents_deletion(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    deletion: Vec<DocumentId>,
-) -> MResult<u64>
-{
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::DocumentsDeletion(deletion);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn push_synonyms_addition(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    addition: BTreeMap<String, Vec<String>>,
-) -> MResult<u64>
-{
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::SynonymsAddition(addition);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
-}
-
-pub fn push_synonyms_deletion(
-    writer: &mut rkv::Writer,
-    updates_store: store::Updates,
-    updates_results_store: store::UpdatesResults,
-    deletion: BTreeMap<String, Option<Vec<String>>>,
-) -> MResult<u64>
-{
-    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
-
-    let update = Update::SynonymsDeletion(deletion);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
-
-    Ok(last_update_id)
+    Ok(new_update_id)
 }
 
 pub fn update_task(
diff --git a/meilidb-core/src/update/schema_update.rs b/meilidb-core/src/update/schema_update.rs
index 2ebec3b39..d25bfa526 100644
--- a/meilidb-core/src/update/schema_update.rs
+++ b/meilidb-core/src/update/schema_update.rs
@@ -1,5 +1,6 @@
 use meilidb_schema::Schema;
 use crate::{store, error::UnsupportedOperation, MResult};
+use crate::update::{Update, next_update_id};
 
 pub fn apply_schema_update(
     writer: &mut rkv::Writer,
@@ -13,3 +14,18 @@ pub fn apply_schema_update(
 
     main_store.put_schema(writer, new_schema)
 }
+
+pub fn push_schema_update(
+    writer: &mut rkv::Writer,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    schema: Schema,
+) -> MResult<u64>
+{
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::SchemaUpdate(schema);
+    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
diff --git a/meilidb-core/src/update/synonyms_addition.rs b/meilidb-core/src/update/synonyms_addition.rs
index 7d83ae59e..69591b86e 100644
--- a/meilidb-core/src/update/synonyms_addition.rs
+++ b/meilidb-core/src/update/synonyms_addition.rs
@@ -8,7 +8,7 @@ use crate::automaton::normalize_str;
 use crate::raw_indexer::RawIndexer;
 use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
 use crate::store;
-use crate::update::push_synonyms_addition;
+use crate::update::{Update, next_update_id};
 use crate::{MResult, Error, RankedMap};
 
 pub struct SynonymsAddition {
@@ -57,6 +57,21 @@ impl SynonymsAddition {
     }
 }
 
+pub fn push_synonyms_addition(
+    writer: &mut rkv::Writer,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    addition: BTreeMap<String, Vec<String>>,
+) -> MResult<u64>
+{
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::SynonymsAddition(addition);
+    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
+
 pub fn apply_synonyms_addition(
     writer: &mut rkv::Writer,
     main_store: store::Main,
diff --git a/meilidb-core/src/update/synonyms_deletion.rs b/meilidb-core/src/update/synonyms_deletion.rs
index 0672f4ca6..66ad1dd44 100644
--- a/meilidb-core/src/update/synonyms_deletion.rs
+++ b/meilidb-core/src/update/synonyms_deletion.rs
@@ -9,7 +9,7 @@ use crate::automaton::normalize_str;
 use crate::raw_indexer::RawIndexer;
 use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
 use crate::store;
-use crate::update::push_synonyms_deletion;
+use crate::update::{Update, next_update_id};
 use crate::{MResult, Error, RankedMap};
 
 pub struct SynonymsDeletion {
@@ -67,6 +67,21 @@ impl SynonymsDeletion {
     }
 }
 
+pub fn push_synonyms_deletion(
+    writer: &mut rkv::Writer,
+    updates_store: store::Updates,
+    updates_results_store: store::UpdatesResults,
+    deletion: BTreeMap<String, Option<Vec<String>>>,
+) -> MResult<u64>
+{
+    let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
+
+    let update = Update::SynonymsDeletion(deletion);
+    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+
+    Ok(last_update_id)
+}
+
 pub fn apply_synonyms_deletion(
     writer: &mut rkv::Writer,
     main_store: store::Main,