diff --git a/package-lock.json b/package-lock.json
index 0dc4c2d8..b5a96b1d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1331,14 +1331,6 @@
         "safer-buffer": "^2.1.0"
       }
     },
-    "eip55": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/eip55/-/eip55-1.0.3.tgz",
-      "integrity": "sha512-x1p4OJNlt0G3mPPZx9GgwOaLFvz8Wd4VFpkx3iNzW4SrakFnjjO4mDdmAJpETxJZp9SlNB4UFqDuFhElnX9K/Q==",
-      "requires": {
-        "keccak": "^1.3.0"
-      }
-    },
     "emoji-regex": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
@@ -4216,6 +4208,14 @@
         }
       }
     },
+    "rskjs-util": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/rskjs-util/-/rskjs-util-1.0.3.tgz",
+      "integrity": "sha512-Q6zfYFQndaBln1iY2gnBfYgDLymbZHAxKXOcZVLAKJkHilcieoUN3ZXVxLA3K30KlgAfmRVG72iTzi+yPNZB1w==",
+      "requires": {
+        "keccak": "^1.0.2"
+      }
+    },
     "rsvp": {
       "version": "4.8.5",
       "resolved": "https://registry.npmjs.org/rsvp/-/rsvp-4.8.5.tgz",
diff --git a/package.json b/package.json
index b02ae2b4..bb6463c7 100644
--- a/package.json
+++ b/package.json
@@ -36,12 +36,11 @@
   },
   "dependencies": {
     "@types/cashaddrjs": "^0.3.0",
-    "base-x": "^3.0.7",
     "bech32": "^1.1.3",
     "bs58check": "^2.1.2",
     "cashaddrjs": "^0.3.8",
-    "eip55": "^1.0.3",
     "ripple-address-codec": "^4.0.0",
+    "rskjs-util": "^1.0.3",
     "safe-buffer": "^5.2.0"
   }
 }
diff --git a/src/@types/eip55/index.d.ts b/src/@types/eip55/index.d.ts
deleted file mode 100644
index 8c1ebca4..00000000
--- a/src/@types/eip55/index.d.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-declare module 'eip55' {
-  export function encode(data: string): string;
-  export function verify(data: string): boolean;
-}
diff --git a/src/__tests__/index.test.ts b/src/__tests__/index.test.ts
index 0bf4f2ce..f90eddcc 100644
--- a/src/__tests__/index.test.ts
+++ b/src/__tests__/index.test.ts
@@ -69,7 +69,17 @@ const vectors: Array<TestVector> = [
     name: 'RSK',
     coinType: 137,
     passingVectors: [
-      { text: '0x314159265dD8dbb310642f98f50C066173C1259b', hex: '314159265dd8dbb310642f98f50c066173c1259b' },
+      { text: '0x5aaEB6053f3e94c9b9a09f33669435E7ef1bEAeD', hex: '5aaeb6053f3e94c9b9a09f33669435e7ef1beaed' },
+      {
+        text: '0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed',
+        hex: '5aaeb6053f3e94c9b9a09f33669435e7ef1beaed',
+        canonical: '0x5aaEB6053f3e94c9b9a09f33669435E7ef1bEAeD',
+      },
+      {
+        text: '0x5AAEB6053F3E94C9B9A09F33669435E7EF1BEAED',
+        hex: '5aaeb6053f3e94c9b9a09f33669435e7ef1beaed',
+        canonical: '0x5aaEB6053f3e94c9b9a09f33669435E7ef1bEAeD',
+      },
     ],
   },
   {
diff --git a/src/index.ts b/src/index.ts
index 543bf3ec..825d37e6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,8 +1,8 @@
 import * as bech32 from 'bech32';
 import * as bs58check from 'bs58check';
 import * as cashaddr from 'cashaddrjs';
-import * as eip55 from 'eip55';
 import * as ripple from 'ripple-address-codec';
+import * as rsk from 'rskjs-util';
 
 interface IFormat {
   coinType: number;
@@ -163,18 +163,28 @@ function decodeBitcoinCash(data: string): Buffer {
   }
 }
 
-function encodeChecksummedHex(data: Buffer): string {
-  return eip55.encode('0x' + data.toString('hex'));
+function makeChecksummedHexEncoder(chainId?: number) {
+  return (data: Buffer) => rsk.toChecksumAddress(data.toString('hex'), chainId || null);
 }
 
-function decodeChecksummedHex(data: string): Buffer {
-  return Buffer.from(data.slice(2), 'hex');
+function makeChecksummedHexDecoder(chainId?: number) {
+  return (data: string) => {
+    const stripped = rsk.stripHexPrefix(data);
+    if (
+      !rsk.isValidChecksumAddress(data, chainId || null) &&
+      stripped !== stripped.toLowerCase() &&
+      stripped !== stripped.toUpperCase()
+    ) {
+      throw Error('Invalid address checksum');
+    }
+    return Buffer.from(rsk.stripHexPrefix(data), 'hex');
+  };
 }
 
-const hexChecksumChain = (name: string, coinType: number) => ({
+const hexChecksumChain = (name: string, coinType: number, chainId?: number) => ({
   coinType,
-  decoder: decodeChecksummedHex,
-  encoder: encodeChecksummedHex,
+  decoder: makeChecksummedHexDecoder(chainId),
+  encoder: makeChecksummedHexEncoder(chainId),
   name,
 });
 
@@ -185,7 +195,7 @@ const formats: IFormat[] = [
   base58Chain('MONA', 22, [0x32], [0x05]),
   hexChecksumChain('ETH', 60),
   hexChecksumChain('ETC', 61),
-  hexChecksumChain('RSK', 137),
+  hexChecksumChain('RSK', 137, 30),
   {
     coinType: 144,
     decoder: (data: string) => ripple.codec.decodeChecked(data),