diff --git a/Cargo.lock b/Cargo.lock
index b6e0b56be..78f26b6d5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -552,15 +552,6 @@ version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b980f2816d6ee8673b6517b52cb0e808a180efc92e5c19d02cdda79066703ef"
 
-[[package]]
-name = "generational-arena"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e1d3b771574f62d0548cee0ad9057857e9fc25d7a3335f140c84f6acd0bf601"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.3"
@@ -1398,7 +1389,6 @@ dependencies = [
  "flamer",
  "flate2",
  "foreign-types-shared",
- "generational-arena",
  "gethostname",
  "getrandom",
  "hex",
@@ -1469,7 +1459,6 @@ version = "0.1.2"
 dependencies = [
  "cfg-if",
  "futures",
- "generational-arena",
  "js-sys",
  "parking_lot",
  "rustpython-compiler",
diff --git a/vm/Cargo.toml b/vm/Cargo.toml
index 0e49c65d4..521e7626b 100644
--- a/vm/Cargo.toml
+++ b/vm/Cargo.toml
@@ -71,7 +71,6 @@ foreign-types-shared = "0.1"
 num_enum = "0.4"
 bstr = "0.2.12"
 crossbeam-utils = "0.7"
-generational-arena = "0.2"
 parking_lot = "0.11"
 thread_local = "1.0"
 cfg-if = "0.1.10"
diff --git a/wasm/lib/Cargo.toml b/wasm/lib/Cargo.toml
index 9f74c5a98..9004816cf 100644
--- a/wasm/lib/Cargo.toml
+++ b/wasm/lib/Cargo.toml
@@ -26,7 +26,6 @@ serde-wasm-bindgen = "0.1"
 serde = "1.0"
 js-sys = "0.3"
 futures = "0.1"
-generational-arena = "0.2"
 # make parking_lot use wasm-bingden for instant
 parking_lot = { version = "0.11", features = ["wasm-bindgen"] }
 
diff --git a/wasm/lib/src/convert.rs b/wasm/lib/src/convert.rs
index 5cbc5ce56..df2d9741a 100644
--- a/wasm/lib/src/convert.rs
+++ b/wasm/lib/src/convert.rs
@@ -1,4 +1,3 @@
-use generational_arena::Arena;
 use std::cell::RefCell;
 
 use js_sys::{Array, ArrayBuffer, Object, Promise, Reflect, SyntaxError, Uint8Array};