diff --git a/milli/Cargo.toml b/milli/Cargo.toml
index 60fc78390..e0d7cbdd7 100644
--- a/milli/Cargo.toml
+++ b/milli/Cargo.toml
@@ -18,7 +18,7 @@ fst = "0.4.7"
 fxhash = "0.2.1"
 geoutils = "0.5.1"
 grenad = { version = "0.4.3", default-features = false, features = ["tempfile"] }
-heed = { git = "https://github.com/meilisearch/heed", tag = "v0.12.3", default-features = false, features = ["lmdb", "sync-read-txn"] }
+heed = { git = "https://github.com/meilisearch/heed", branch = "lmdb-master-3", default-features = false, features = ["lmdb", "sync-read-txn"] }
 json-depth-checker = { path = "../json-depth-checker" }
 levenshtein_automata = { version = "0.2.1", features = ["fst_automaton"] }
 memmap2 = "0.5.7"