diff --git a/Cargo.lock b/Cargo.lock
index 0f9cbf31c022..5c095e0eefa8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -600,6 +600,7 @@ dependencies = [
  "serde_json",
  "tempfile",
  "termize",
+ "tikv-jemalloc-sys",
  "toml 0.9.7",
  "ui_test",
  "walkdir",
@@ -4806,6 +4807,7 @@ dependencies = [
  "stringdex",
  "tempfile",
  "threadpool",
+ "tikv-jemalloc-sys",
  "tracing",
  "tracing-subscriber",
  "tracing-tree",
diff --git a/src/librustdoc/Cargo.toml b/src/librustdoc/Cargo.toml
index 63412e2b9373..e1408bb7e5bc 100644
--- a/src/librustdoc/Cargo.toml
+++ b/src/librustdoc/Cargo.toml
@@ -24,6 +24,7 @@ smallvec = "1.8.1"
 stringdex = "=0.0.2"
 tempfile = "3"
 threadpool = "1.8.1"
+tikv-jemalloc-sys = { version = "0.6.1", optional = true, features = ['override_allocator_on_supported_platforms'] }
 tracing = "0.1"
 tracing-tree = "0.3.0"
 unicode-segmentation = "1.9"
@@ -42,7 +43,7 @@ minifier = { version = "0.3.2", default-features = false }
 expect-test = "1.4.0"
 
 [features]
-jemalloc = []
+jemalloc = ["dep:tikv-jemalloc-sys"]
 
 [package.metadata.rust-analyzer]
 rustc_private = true
diff --git a/src/tools/clippy/Cargo.toml b/src/tools/clippy/Cargo.toml
index fee885d8fa7e..f0f9c05e4330 100644
--- a/src/tools/clippy/Cargo.toml
+++ b/src/tools/clippy/Cargo.toml
@@ -31,6 +31,7 @@ tempfile = { version = "3.20", optional = true }
 termize = "0.2"
 color-print = "0.3.4"
 anstream = "0.6.18"
+tikv-jemalloc-sys = { version = "0.6.1", optional = true, features = ['override_allocator_on_supported_platforms'] }
 
 [dev-dependencies]
 cargo_metadata = "0.18.1"
@@ -56,7 +57,7 @@ rustc_tools_util = { path = "rustc_tools_util", version = "0.4.2" }
 [features]
 integration = ["dep:tempfile"]
 internal = ["dep:clippy_lints_internal", "dep:tempfile"]
-jemalloc = []
+jemalloc = ["dep:tikv-jemalloc-sys"]
 
 [package.metadata.rust-analyzer]
 # This package uses #[feature(rustc_private)]