diff --git a/Cargo.toml b/Cargo.toml
index 99b6c5b..1a7b663 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,6 @@ spki = { version = "0.8.0", default-features = false, features = [
   "pem",
   "std",
 ] }
-zip = "8.5.1"
 
 [build-dependencies]
 napi-build = "2.3.1"
diff --git a/README.md b/README.md
index 0441918..a9f4dd3 100644
--- a/README.md
+++ b/README.md
@@ -10,5 +10,3 @@ An internal library for Misskey backend used to obtain performance benefits.
 - aws-lc-sys
   - `Signer` (requires init before use)
   - `Verifier` (requires init before use)
-- zip
-  - `ZipReader`
diff --git a/index.d.ts b/index.d.ts
index e38537c..8893d4e 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -23,12 +23,6 @@ export declare class Verifier {
 }
 export type JsVerifier = Verifier
 
-export declare class ZipReader {
-  static withDestinationPath(path: string): ZipReader
-  viaBuffer(buffer: Buffer): void
-}
-export type JsZipReader = ZipReader
-
 export declare function init(numThreads: number): void
 
 export declare const enum SignatureAlgorithmIdentifier {
diff --git a/index.js b/index.js
index 3fbbc1f..63a7bea 100644
--- a/index.js
+++ b/index.js
@@ -582,7 +582,5 @@ module.exports.Signer = nativeBinding.Signer
 module.exports.JsSigner = nativeBinding.JsSigner
 module.exports.Verifier = nativeBinding.Verifier
 module.exports.JsVerifier = nativeBinding.JsVerifier
-module.exports.ZipReader = nativeBinding.ZipReader
-module.exports.JsZipReader = nativeBinding.JsZipReader
 module.exports.init = nativeBinding.init
 module.exports.SignatureAlgorithmIdentifier = nativeBinding.SignatureAlgorithmIdentifier
diff --git a/src/lib.rs b/src/lib.rs
index a40f827..f20c91e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,7 +9,6 @@ extern crate napi_derive;
 
 pub mod aho_corasick;
 pub mod aws_lc_rs;
-pub mod zip;
 
 pub(crate) static THREAD_POOL: OnceLock<ThreadPool> = OnceLock::new();
 
diff --git a/src/zip.rs b/src/zip.rs
deleted file mode 100644
index 5dd04c0..0000000
--- a/src/zip.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-use std::{
-  io::Cursor,
-  path::{Path, PathBuf},
-};
-
-use napi::bindgen_prelude::*;
-use zip;
-
-pub struct ZipReader {}
-
-#[napi(js_name = "ZipReader")]
-pub struct JsZipReader {
-  destination: DestinationType,
-}
-
-enum DestinationType {
-  Path(Box<Path>),
-}
-
-#[napi]
-impl JsZipReader {
-  #[napi(factory)]
-  pub fn with_destination_path(path: String) -> Self {
-    Self {
-      destination: DestinationType::Path(PathBuf::from(&path).into_boxed_path()),
-    }
-  }
-
-  #[napi]
-  pub fn via_buffer(&self, buffer: Buffer) -> Result<()> {
-    let mut zip = zip::ZipArchive::new(Cursor::new(buffer.as_ref())).map_err(|err| {
-      Error::new(
-        Status::InvalidArg,
-        format!("Failed to open zip archive: {}", err),
-      )
-    })?;
-    self.extract(&mut zip)
-  }
-
-  fn extract(&self, zip: &mut zip::ZipArchive<Cursor<&[u8]>>) -> Result<()> {
-    match &self.destination {
-      DestinationType::Path(path) => {
-        zip.extract(path).map_err(|err| {
-          Error::new(
-            Status::InvalidArg,
-            format!("Failed to extract zip archive: {}", err),
-          )
-        })?;
-      }
-    }
-    Ok(())
-  }
-}
diff --git a/test/resources/zip/sqlite-amalgamation-3410200.zip b/test/resources/zip/sqlite-amalgamation-3410200.zip
deleted file mode 100644
index 2697b87..0000000
Binary files a/test/resources/zip/sqlite-amalgamation-3410200.zip and /dev/null differ
diff --git a/test/zip.test.mjs b/test/zip.test.mjs
deleted file mode 100644
index 65814dc..0000000
--- a/test/zip.test.mjs
+++ /dev/null
@@ -1,58 +0,0 @@
-import * as crypto from "node:crypto";
-import * as fs from "node:fs/promises";
-import * as path from "node:path";
-import { describe, expect, it } from "vitest";
-import { ZipReader } from "../index.js";
-
-describe(ZipReader.name, () => {
-  it("should read zip file", async () => {
-    await fs.mkdir(path.resolve(__dirname, "..", "node_modules", ".tmp"), {
-      recursive: true,
-    });
-    const tmp = await fs.mkdtemp(
-      path.resolve(__dirname, "..", "node_modules", ".tmp", "zip-")
-    );
-    try {
-      const zip = ZipReader.withDestinationPath(tmp);
-      zip.viaBuffer(
-        await fs.readFile(
-          path.resolve(
-            __dirname,
-            "resources",
-            "zip",
-            "sqlite-amalgamation-3410200.zip"
-          )
-        )
-      );
-      const files = await fs.readdir(
-        path.resolve(tmp, "sqlite-amalgamation-3410200")
-      );
-      expect(files).toEqual([
-        "shell.c",
-        "sqlite3.c",
-        "sqlite3.h",
-        "sqlite3ext.h",
-      ]);
-      const hashes = await Promise.all(
-        files.map(async (file) =>
-          crypto
-            .createHash("sha256")
-            .update(
-              await fs.readFile(
-                path.resolve(tmp, "sqlite-amalgamation-3410200", file)
-              )
-            )
-            .digest("hex")
-        )
-      );
-      expect(hashes).toEqual([
-        "917bb6d7539c2a782bfbfcdec2405a7a27070930ada28ae00607fe1e9b3f3ad1",
-        "efe007ec6f1a4084b87cebba18cc887c316e0baaf4ec2675990726b94cb85470",
-        "10ff8c8842b5e6bb0555f39ce946b77d0f84acc9e33895d22242444d91900571",
-        "cf9785762f8801049b841f873cdeecfa2780b0f6465e2b76f72d2c10384cf7ce",
-      ]);
-    } finally {
-      await fs.rm(tmp, { recursive: true });
-    }
-  });
-});