diff --git a/Cargo.lock b/Cargo.lock
index 45631fba63327..1727eae852f87 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,7 +20,7 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "getrandom",
  "once_cell",
  "version_check",
@@ -270,12 +270,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -465,7 +459,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6050c3a16ddab2e412160b31f2c871015704239bca62f72f6e5f0be631d3f644"
 dependencies = [
  "castaway",
- "cfg-if 1.0.0",
+ "cfg-if",
  "itoa",
  "rustversion",
  "ryu",
@@ -492,7 +486,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "wasm-bindgen",
 ]
 
@@ -529,7 +523,7 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3855a8a784b474f333699ef2bbca9db2c4a1f6d9088a90a2d25b1eb53111eaa"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
 ]
 
 [[package]]
@@ -679,7 +673,7 @@ version = "5.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "978747c1d849a7d2ee5e8adc0159961c48fb7e5db2f06af6723b80123bb53856"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "hashbrown",
  "lock_api",
  "once_cell",
@@ -692,7 +686,7 @@ version = "6.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "804c8821570c3f8b70230c2ba75ffa5c0f9a4189b9a432b6656c536712acae28"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "crossbeam-utils",
  "hashbrown",
  "lock_api",
@@ -816,7 +810,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "136d1b5283a1ab77bd9257427ffd09d8667ced0570b6f938942bc7568ed5b943"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "home",
  "windows-sys 0.48.0",
 ]
@@ -842,7 +836,7 @@ version = "0.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ee447700ac8aa0b2f2bd7bc4462ad686ba06baa6727ac149a2d6277f0d240fd"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
  "redox_syscall",
  "windows-sys 0.52.0",
@@ -906,7 +900,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "js-sys",
  "libc",
  "wasi",
@@ -938,7 +932,7 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6dd08c532ae367adf81c312a4580bc67f1d0fe8bc9c460520283f4c0ff277888"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "crunchy",
 ]
 
@@ -1147,7 +1141,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
 ]
 
 [[package]]
@@ -1396,12 +1390,6 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
-[[package]]
-name = "memory_units"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8452105ba047068f40ff7093dd1d9da90898e63dd61736462e9cdda6a90ad3c3"
-
 [[package]]
 name = "mimalloc"
 version = "0.1.43"
@@ -1460,7 +1448,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab2156c4fce2f8df6c499cc1c763e4394b7482525bf2a9701c9d79d215f519e4"
 dependencies = [
  "bitflags 2.6.0",
- "cfg-if 1.0.0",
+ "cfg-if",
  "cfg_aliases",
  "libc",
 ]
@@ -1586,7 +1574,7 @@ version = "0.9.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c42a9226546d68acdd9c0a280d17ce19bfe27a46bf68784e4066115788d008e"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
  "redox_syscall",
  "smallvec",
@@ -1953,7 +1941,6 @@ dependencies = [
  "ruff_notebook",
  "wasm-bindgen",
  "wasm-bindgen-test",
- "wee_alloc",
 ]
 
 [[package]]
@@ -2044,7 +2031,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
 dependencies = [
  "cc",
- "cfg-if 1.0.0",
+ "cfg-if",
  "getrandom",
  "libc",
  "spin",
@@ -3018,7 +3005,7 @@ version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8fcd239983515c23a32fb82099f97d0b11b8c72f654ed659363a95c3dad7a53"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "fastrand",
  "once_cell",
  "rustix",
@@ -3063,7 +3050,7 @@ version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adcb7fd841cd518e279be3d5a3eb0636409487998a4aff22f3de87b81e88384f"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "proc-macro2",
  "quote",
  "syn",
@@ -3107,7 +3094,7 @@ version = "1.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b9ef9bad013ada3808854ceac7b46812a6465ba368859a37e2100283d2d719c"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "once_cell",
 ]
 
@@ -3509,7 +3496,7 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "wasm-bindgen-macro",
 ]
 
@@ -3534,7 +3521,7 @@ version = "0.4.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "76bc14366121efc8dbb487ab05bcc9d346b3b5ec0eaa76e46594cabbe51762c0"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "js-sys",
  "wasm-bindgen",
  "web-sys",
@@ -3623,18 +3610,6 @@ dependencies = [
  "rustls-pki-types",
 ]
 
-[[package]]
-name = "wee_alloc"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbb3b5a6b2bb17cb6ad44a2e68a43e8d2722c997da10e928665c72ec6c0a0b8e"
-dependencies = [
- "cfg-if 0.1.10",
- "libc",
- "memory_units",
- "winapi",
-]
-
 [[package]]
 name = "which"
 version = "6.0.1"
diff --git a/crates/red_knot_wasm/Cargo.toml b/crates/red_knot_wasm/Cargo.toml
index dbcd36d5f5b9c..21bafe469aa61 100644
--- a/crates/red_knot_wasm/Cargo.toml
+++ b/crates/red_knot_wasm/Cargo.toml
@@ -29,7 +29,6 @@ console_log = { workspace = true }
 js-sys = { workspace = true }
 log = { workspace = true }
 wasm-bindgen = { workspace = true }
-wee_alloc = "0.4.5"
 
 [dev-dependencies]
 wasm-bindgen-test = { workspace = true }
diff --git a/crates/red_knot_wasm/src/lib.rs b/crates/red_knot_wasm/src/lib.rs
index 1fe1b5abde022..11d2caf8b2165 100644
--- a/crates/red_knot_wasm/src/lib.rs
+++ b/crates/red_knot_wasm/src/lib.rs
@@ -14,10 +14,6 @@ use ruff_db::system::{
 };
 use ruff_notebook::Notebook;
 
-// Use `wee_alloc` as the global allocator.
-#[global_allocator]
-static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
-
 #[wasm_bindgen(start)]
 pub fn run() {
     use log::Level;