diff --git a/crates/milli/src/update/new/channel.rs b/crates/milli/src/update/new/channel.rs
index 49355593c..2027b4db8 100644
--- a/crates/milli/src/update/new/channel.rs
+++ b/crates/milli/src/update/new/channel.rs
@@ -8,7 +8,7 @@ use roaring::RoaringBitmap;
 
 use super::extract::FacetKind;
 use super::StdResult;
-use crate::index::main_key::GEO_RTREE_KEY;
+use crate::index::main_key::{GEO_FACETED_DOCUMENTS_IDS_KEY, GEO_RTREE_KEY};
 use crate::index::IndexEmbeddingConfig;
 use crate::update::new::KvReaderFieldId;
 use crate::vector::Embedding;
@@ -458,4 +458,19 @@ impl GeoSender<'_> {
             }))
             .map_err(|_| SendError(()))
     }
+
+    pub fn set_geo_faceted(&self, bitmap: &RoaringBitmap) -> StdResult<(), SendError<()>> {
+        let mut buffer = Vec::new();
+        bitmap.serialize_into(&mut buffer).unwrap();
+
+        self.0
+            .send(WriterOperation::DbOperation(DbOperation {
+                database: Database::Main,
+                entry: EntryOperation::Write(KeyValueEntry::from_small_key_value(
+                    GEO_FACETED_DOCUMENTS_IDS_KEY.as_bytes(),
+                    &buffer,
+                )),
+            }))
+            .map_err(|_| SendError(()))
+    }
 }
diff --git a/crates/milli/src/update/new/document.rs b/crates/milli/src/update/new/document.rs
index 692277597..ace6b236b 100644
--- a/crates/milli/src/update/new/document.rs
+++ b/crates/milli/src/update/new/document.rs
@@ -303,6 +303,8 @@ where
 {
     // will be used in 'inject_vectors
     let vectors_value: Box<RawValue>;
+    let geo_lat: Box<RawValue>;
+    let geo_lng: Box<RawValue>;
 
     document_buffer.clear();
     let mut unordered_field_buffer = Vec::new();
@@ -352,8 +354,30 @@ where
         unordered_field_buffer.push((vectors_fid, &vectors_value));
     }
 
+    if let Some(geo_value) = document.geo_field()? {
+        #[derive(serde::Deserialize)]
+        struct Geo {
+            lat: serde_json::Value,
+            lng: serde_json::Value,
+        }
+
+        // We must flatten and generate the fields ids for the geo sub fields
+        if let Ok(Geo { lat, lng }) = serde_json::from_str(geo_value.get()) {
+            let lat_id =
+                fields_ids_map.id_or_insert("_geo.lat").ok_or(UserError::AttributeLimitReached)?;
+            geo_lat = serde_json::value::to_raw_value(&lat).unwrap();
+            unordered_field_buffer.push((lat_id, &geo_lat));
+
+            let lng_id =
+                fields_ids_map.id_or_insert("_geo.lng").ok_or(UserError::AttributeLimitReached)?;
+            geo_lng = serde_json::value::to_raw_value(&lng).unwrap();
+            unordered_field_buffer.push((lng_id, &geo_lng));
+        }
+    }
+
     unordered_field_buffer.sort_by_key(|(fid, _)| *fid);
     for (fid, value) in unordered_field_buffer.iter() {
+        dbg!(fields_ids_map.name(*fid), value.get());
         writer.insert(*fid, value.get().as_bytes()).unwrap();
     }
 
@@ -406,6 +430,7 @@ impl<'doc> Versions<'doc> {
     pub fn is_empty(&self) -> bool {
         self.data.is_empty()
     }
+
     pub fn top_level_field(&self, k: &str) -> Option<&'doc RawValue> {
         if k == RESERVED_VECTORS_FIELD_NAME || k == "_geo" {
             return None;
diff --git a/crates/milli/src/update/new/merger.rs b/crates/milli/src/update/new/merger.rs
index 67631cfc9..c81f84f43 100644
--- a/crates/milli/src/update/new/merger.rs
+++ b/crates/milli/src/update/new/merger.rs
@@ -27,6 +27,8 @@ where
     MSP: Fn() -> bool + Sync,
 {
     let mut rtree = index.geo_rtree(rtxn)?.unwrap_or_default();
+    let mut faceted = index.geo_faceted_documents_ids(rtxn)?;
+
     for data in datastore {
         if must_stop_processing() {
             return Err(InternalError::AbortedIndexation.into());
@@ -35,12 +37,14 @@ where
         let mut frozen = data.into_inner().freeze()?;
         for result in frozen.iter_and_clear_removed() {
             let extracted_geo_point = result?;
-            rtree.remove(&GeoPoint::from(extracted_geo_point));
+            debug_assert!(rtree.remove(&GeoPoint::from(extracted_geo_point)).is_some());
+            debug_assert!(faceted.remove(extracted_geo_point.docid));
         }
 
         for result in frozen.iter_and_clear_inserted() {
             let extracted_geo_point = result?;
             rtree.insert(GeoPoint::from(extracted_geo_point));
+            debug_assert!(faceted.insert(extracted_geo_point.docid));
         }
     }
 
@@ -51,6 +55,7 @@ where
 
     let rtree_mmap = unsafe { Mmap::map(&file)? };
     geo_sender.set_rtree(rtree_mmap).unwrap();
+    geo_sender.set_geo_faceted(&faceted).unwrap();
 
     Ok(())
 }