diff --git a/src/update/index_documents/mod.rs b/src/update/index_documents/mod.rs
new file mode 100644
index 000000000..0cdd68df1
--- /dev/null
+++ b/src/update/index_documents/mod.rs
@@ -0,0 +1,33 @@
+use crate::Index;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum IndexDocumentsMethod {
+    /// Replace the previous document with the new one,
+    /// removing all the already known attributes.
+    ReplaceDocuments,
+
+    /// Merge the previous version of the document with the new version,
+    /// replacing old attributes values with the new ones and add the new attributes.
+    UpdateDocuments,
+}
+
+pub struct IndexDocuments<'t, 'u, 'i> {
+    wtxn: &'t mut heed::RwTxn<'u>,
+    index: &'i Index,
+    update_method: IndexDocumentsMethod,
+}
+
+impl<'t, 'u, 'i> IndexDocuments<'t, 'u, 'i> {
+    pub fn new(wtxn: &'t mut heed::RwTxn<'u>, index: &'i Index) -> IndexDocuments<'t, 'u, 'i> {
+        IndexDocuments { wtxn, index, update_method: IndexDocumentsMethod::ReplaceDocuments }
+    }
+
+    pub fn index_documents_method(&mut self, method: IndexDocumentsMethod) -> &mut Self {
+        self.update_method = method;
+        self
+    }
+
+    pub fn execute(self) -> anyhow::Result<()> {
+        todo!()
+    }
+}
diff --git a/src/update/mod.rs b/src/update/mod.rs
index 31d4a8242..fcaffe9c0 100644
--- a/src/update/mod.rs
+++ b/src/update/mod.rs
@@ -1,11 +1,13 @@
 mod available_documents_ids;
 mod clear_documents;
 mod delete_documents;
+mod index_documents;
 mod update_builder;
 mod update_store;
 
 pub use self::available_documents_ids::AvailableDocumentsIds;
 pub use self::clear_documents::ClearDocuments;
 pub use self::delete_documents::DeleteDocuments;
+pub use self::index_documents::{IndexDocuments, IndexDocumentsMethod};
 pub use self::update_builder::UpdateBuilder;
 pub use self::update_store::UpdateStore;
diff --git a/src/update/update_builder.rs b/src/update/update_builder.rs
index b8b50c092..bbbc23619 100644
--- a/src/update/update_builder.rs
+++ b/src/update/update_builder.rs
@@ -9,6 +9,7 @@ use roaring::RoaringBitmap;
 use crate::{Index, BEU32};
 use super::clear_documents::ClearDocuments;
 use super::delete_documents::DeleteDocuments;
+use super::index_documents::IndexDocuments;
 
 pub struct UpdateBuilder {
     log_every_n: usize,
@@ -99,34 +100,3 @@ impl UpdateBuilder {
         IndexDocuments::new(wtxn, index)
     }
 }
-
-pub enum IndexDocumentsMethod {
-    /// Replace the previous document with the new one,
-    /// removing all the already known attributes.
-    ReplaceDocuments,
-
-    /// Merge the previous version of the document with the new version,
-    /// replacing old attributes values with the new ones and add the new attributes.
-    UpdateDocuments,
-}
-
-pub struct IndexDocuments<'t, 'u, 'i> {
-    wtxn: &'t mut heed::RwTxn<'u>,
-    index: &'i Index,
-    update_method: IndexDocumentsMethod,
-}
-
-impl<'t, 'u, 'i> IndexDocuments<'t, 'u, 'i> {
-    fn new(wtxn: &'t mut heed::RwTxn<'u>, index: &'i Index) -> IndexDocuments<'t, 'u, 'i> {
-        IndexDocuments { wtxn, index, update_method: IndexDocumentsMethod::ReplaceDocuments }
-    }
-
-    pub fn index_documents_method(&mut self, method: IndexDocumentsMethod) -> &mut Self {
-        self.update_method = method;
-        self
-    }
-
-    pub fn execute(self) -> anyhow::Result<()> {
-        todo!()
-    }
-}