diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index f7acfbebd..b0d15a6e0 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -41,7 +41,7 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: check
-        args: --workspace --all-targets
+        args: --workspace --all-targets --release
     - name: Run cargo test
       uses: actions-rs/cargo@v1
       with:
diff --git a/milli/Cargo.toml b/milli/Cargo.toml
index 72e31f6c5..6867edb79 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", branch = "lmdb-master-3", default-features = false, features = ["lmdb", "sync-read-txn"] }
+heed = { git = "https://github.com/meilisearch/heed", tag = "v0.12.4", 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"