diff --git a/package.json b/package.json
index 72fd892..562e3a5 100644
--- a/package.json
+++ b/package.json
@@ -31,8 +31,8 @@
     "prepare": "yarn build"
   },
   "dependencies": {
+    "@stablelib/ed25519": "^1.0.2",
     "one-webcrypto": "^1.0.1",
-    "tweetnacl": "^1.0.3",
     "uint8arrays": "^3.0.0"
   },
   "devDependencies": {
diff --git a/src/did/validation.ts b/src/did/validation.ts
index d708e7b..dd28825 100644
--- a/src/did/validation.ts
+++ b/src/did/validation.ts
@@ -1,5 +1,5 @@
+import * as ed25519 from "@stablelib/ed25519"
 import * as uint8arrays from "uint8arrays"
-import nacl from "tweetnacl"
 
 import * as rsa from "../crypto/rsa"
 import * as ecdsa from "../crypto/ecdsa"
@@ -17,7 +17,7 @@ export async function verifySignature(data: Uint8Array, signature: Uint8Array, d
     switch (type) {
 
       case "ed25519":
-        return nacl.sign.detached.verify(data, signature, publicKey)
+        return ed25519.verify(publicKey, data, signature)
 
       case "rsa":
         return await rsa.verify(data, signature, publicKey)
diff --git a/src/keypair/ed25519.ts b/src/keypair/ed25519.ts
index bc92ca1..15e6f5e 100644
--- a/src/keypair/ed25519.ts
+++ b/src/keypair/ed25519.ts
@@ -1,4 +1,4 @@
-import nacl from "tweetnacl"
+import * as ed25519 from "@stablelib/ed25519"
 import * as uint8arrays from "uint8arrays"
 import BaseKeypair from "./base"
 import { Encodings } from "../types"
@@ -16,7 +16,7 @@ export class EdKeypair extends BaseKeypair {
     exportable: boolean
   }): Promise<EdKeypair> {
     const { exportable } = params || {}
-    const keypair = nacl.sign.keyPair()
+    const keypair = ed25519.generateKeyPair()
     return new EdKeypair(keypair.secretKey, keypair.publicKey, exportable ?? false)
   }
 
@@ -26,12 +26,12 @@ export class EdKeypair extends BaseKeypair {
   }): EdKeypair {
     const { format = "base64pad", exportable = false } = params || {}
     const secretKey = uint8arrays.fromString(key, format)
-    const keypair = nacl.sign.keyPair.fromSecretKey(secretKey)
-    return new EdKeypair(keypair.secretKey, keypair.publicKey, exportable)
+    const publicKey = ed25519.extractPublicKeyFromSecretKey(secretKey)
+    return new EdKeypair(secretKey, publicKey, exportable)
   }
 
   async sign(msg: Uint8Array): Promise<Uint8Array> {
-    return nacl.sign.detached(msg, this.secretKey)
+    return ed25519.sign(this.secretKey, msg)
   }
 
   async export(format: Encodings = "base64pad"): Promise<string> {
diff --git a/yarn.lock b/yarn.lock
index b90695a..4628527 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -551,6 +551,54 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
+"@stablelib/binary@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/binary/-/binary-1.0.1.tgz#c5900b94368baf00f811da5bdb1610963dfddf7f"
+  integrity sha512-ClJWvmL6UBM/wjkvv/7m5VP3GMr9t0osr4yVgLZsLCOz4hGN9gIAFEqnJ0TsSMAN+n840nf2cHZnA5/KFqHC7Q==
+  dependencies:
+    "@stablelib/int" "^1.0.1"
+
+"@stablelib/ed25519@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@stablelib/ed25519/-/ed25519-1.0.2.tgz#937a88a2f73a71d9bdc3ea276efe8954776ae0f4"
+  integrity sha512-FtnvUwvKbp6l1dNcg4CswMAVFVu/nzLK3oC7/PRtjYyHbWsIkD8j+5cjXHmwcCpdCpRCaTGACkEhhMQ1RcdSOQ==
+  dependencies:
+    "@stablelib/random" "^1.0.1"
+    "@stablelib/sha512" "^1.0.1"
+    "@stablelib/wipe" "^1.0.1"
+
+"@stablelib/hash@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/hash/-/hash-1.0.1.tgz#3c944403ff2239fad8ebb9015e33e98444058bc5"
+  integrity sha512-eTPJc/stDkdtOcrNMZ6mcMK1e6yBbqRBaNW55XA1jU8w/7QdnCF0CmMmOD1m7VSkBR44PWrMHU2l6r8YEQHMgg==
+
+"@stablelib/int@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/int/-/int-1.0.1.tgz#75928cc25d59d73d75ae361f02128588c15fd008"
+  integrity sha512-byr69X/sDtDiIjIV6m4roLVWnNNlRGzsvxw+agj8CIEazqWGOQp2dTYgQhtyVXV9wpO6WyXRQUzLV/JRNumT2w==
+
+"@stablelib/random@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/random/-/random-1.0.1.tgz#4357a00cb1249d484a9a71e6054bc7b8324a7009"
+  integrity sha512-zOh+JHX3XG9MSfIB0LZl/YwPP9w3o6WBiJkZvjPoKKu5LKFW4OLV71vMxWp9qG5T43NaWyn0QQTWgqCdO+yOBQ==
+  dependencies:
+    "@stablelib/binary" "^1.0.1"
+    "@stablelib/wipe" "^1.0.1"
+
+"@stablelib/sha512@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/sha512/-/sha512-1.0.1.tgz#6da700c901c2c0ceacbd3ae122a38ac57c72145f"
+  integrity sha512-13gl/iawHV9zvDKciLo1fQ8Bgn2Pvf7OV6amaRVKiq3pjQ3UmEpXxWiAfV8tYjUpeZroBxtyrwtdooQT/i3hzw==
+  dependencies:
+    "@stablelib/binary" "^1.0.1"
+    "@stablelib/hash" "^1.0.1"
+    "@stablelib/wipe" "^1.0.1"
+
+"@stablelib/wipe@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@stablelib/wipe/-/wipe-1.0.1.tgz#d21401f1d59ade56a62e139462a97f104ed19a36"
+  integrity sha512-WfqfX/eXGiAd3RJe4VU2snh/ZPwtSjLG4ynQ/vYzvghTh7dHFcI1wl+nrkWG6lGhukOxOsUHfv8dUXr58D0ayg==
+
 "@tootallnate/once@1":
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-1.1.2.tgz#ccb91445360179a04e7fe6aff78c00ffc1eeaf82"
@@ -2934,11 +2982,6 @@ tsutils@^3.21.0:
   dependencies:
     tslib "^1.8.1"
 
-tweetnacl@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-1.0.3.tgz#ac0af71680458d8a6378d0d0d050ab1407d35596"
-  integrity sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw==
-
 type-check@^0.4.0, type-check@~0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.4.0.tgz#07b8203bfa7056c0657050e3ccd2c37730bab8f1"