diff --git a/Cargo.lock b/Cargo.lock
index 43371f72c..428aae05f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -132,6 +132,7 @@ dependencies = [
  "criterion",
  "flate2",
  "heed",
+ "jemallocator",
  "milli",
  "reqwest",
 ]
@@ -969,6 +970,7 @@ dependencies = [
  "futures",
  "grenad",
  "heed",
+ "jemallocator",
  "log",
  "maplit",
  "meilisearch-tokenizer 0.2.3",
diff --git a/benchmarks/Cargo.toml b/benchmarks/Cargo.toml
index ed366022c..d211b0b6e 100644
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@@ -8,6 +8,9 @@ publish = false
 [dependencies]
 milli = { path = "../milli" }
 
+[target.'cfg(target_os = "linux")'.dependencies]
+jemallocator = "0.3.2"
+
 [dev-dependencies]
 heed = "*" # we want to use the version milli uses
 criterion = { version = "0.3.4", features = ["html_reports"] }
diff --git a/benchmarks/benches/songs.rs b/benchmarks/benches/songs.rs
index 726190f77..726040692 100644
--- a/benchmarks/benches/songs.rs
+++ b/benchmarks/benches/songs.rs
@@ -5,6 +5,10 @@ use criterion::{criterion_group, criterion_main};
 use milli::update::Settings;
 use utils::Conf;
 
+#[cfg(target_os = "linux")]
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 fn base_conf(builder: &mut Settings) {
     let displayed_fields =
         ["id", "title", "album", "artist", "genre", "country", "released", "duration"]
diff --git a/benchmarks/benches/wiki.rs b/benchmarks/benches/wiki.rs
index 3d8b6f1d4..9ef75efeb 100644
--- a/benchmarks/benches/wiki.rs
+++ b/benchmarks/benches/wiki.rs
@@ -5,6 +5,10 @@ use criterion::{criterion_group, criterion_main};
 use milli::update::Settings;
 use utils::Conf;
 
+#[cfg(target_os = "linux")]
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 fn base_conf(builder: &mut Settings) {
     let displayed_fields = ["title", "body", "url"].iter().map(|s| s.to_string()).collect();
     builder.set_displayed_fields(displayed_fields);
diff --git a/http-ui/Cargo.toml b/http-ui/Cargo.toml
index 180d1ff29..0319e4e50 100644
--- a/http-ui/Cargo.toml
+++ b/http-ui/Cargo.toml
@@ -42,3 +42,6 @@ funty = "=1.1"
 [dev-dependencies]
 maplit = "1.0.2"
 serde_test = "1.0.125"
+
+[target.'cfg(target_os = "linux")'.dependencies]
+jemallocator = "0.3.2"
diff --git a/http-ui/src/main.rs b/http-ui/src/main.rs
index 703861058..6a79e77ca 100644
--- a/http-ui/src/main.rs
+++ b/http-ui/src/main.rs
@@ -36,6 +36,10 @@ use warp::Filter;
 
 use self::update_store::UpdateStore;
 
+#[cfg(target_os = "linux")]
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 static GLOBAL_THREAD_POOL: OnceCell<ThreadPool> = OnceCell::new();
 
 #[derive(Debug, StructOpt)]