diff --git a/index.js b/index.js
index beaf57e..ed78a58 100644
--- a/index.js
+++ b/index.js
@@ -127,10 +127,10 @@ function sign (
   const hash = magicHash(message, messagePrefixArg)
   const sigObj = isSigner(privateKey)
     ? privateKey.sign(hash, extraEntropy)
-    : secp256k1.sign(hash, privateKey, { data: extraEntropy })
+    : secp256k1.ecdsaSign(hash, privateKey, { data: extraEntropy })
   return encodeSignature(
     sigObj.signature,
-    sigObj.recovery,
+    sigObj.recid,
     compressed,
     segwitType
   )
@@ -153,11 +153,11 @@ function signAsync (
     const hash = magicHash(message, messagePrefixArg)
     return isSigner(privateKey)
       ? privateKey.sign(hash, extraEntropy)
-      : secp256k1.sign(hash, privateKey, { data: extraEntropy })
+      : secp256k1.ecdsaSign(hash, privateKey, { data: extraEntropy })
   }).then((sigObj) => {
     return encodeSignature(
       sigObj.signature,
-      sigObj.recovery,
+      sigObj.recid,
       compressed,
       segwitType
     )
@@ -188,12 +188,13 @@ function verify (message, address, signature, messagePrefix, checkSegwitAlways)
   }
 
   const hash = magicHash(message, messagePrefix)
-  const publicKey = secp256k1.recover(
-    hash,
+  const publicKey = secp256k1.ecdsaRecover(
     parsed.signature,
     parsed.recovery,
+    hash,
     parsed.compressed
   )
+
   const publicKeyHash = hash160(publicKey)
   let actual, expected
 
diff --git a/package.json b/package.json
index bc1e4e9..d73a6bb 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "bs58check": "^2.1.2",
     "buffer-equals": "^1.0.3",
     "create-hash": "^1.1.2",
-    "secp256k1": "^3.0.1",
+    "secp256k1": "5.0.0",
     "varuint-bitcoin": "^1.0.1"
   },
   "devDependencies": {
diff --git a/test/index.js b/test/index.js
index b9a0505..c5b7444 100644
--- a/test/index.js
+++ b/test/index.js
@@ -27,8 +27,8 @@ fixtures.valid.magicHash.forEach(f => {
 fixtures.valid.sign.forEach(f => {
   test('sign: ' + f.description, async t => {
     const pk = new bitcoin.ECPair(new BigInteger(f.d)).d.toBuffer(32)
-    const signer = (hash, ex) => secp256k1.sign(hash, pk, { data: ex })
-    const signerAsync = async (hash, ex) => secp256k1.sign(hash, pk, { data: ex })
+    const signer = (hash, ex) => secp256k1.ecdsaSign(hash, pk, { data: ex })
+    const signerAsync = async (hash, ex) => secp256k1.ecdsaSign(hash, pk, { data: ex })
     let signature = message.sign(
       f.message,
       pk,