diff --git a/lib/Base64.js b/lib/Base64.js
new file mode 100644
index 0000000..ded8abe
--- /dev/null
+++ b/lib/Base64.js
@@ -0,0 +1,53 @@
+// Inspired by: https://github.com/davidchambers/Base64.js/blob/master/base64.js
+
+const chars =
+  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
+
+const Base64 = {
+  btoa: (input = '') => {
+    let str = input
+    let output = ''
+
+    for (
+      let block = 0, charCode, i = 0, map = chars;
+      str.charAt(i | 0) || ((map = '='), i % 1);
+      output += map.charAt(63 & (block >> (8 - (i % 1) * 8)))
+    ) {
+      charCode = str.charCodeAt((i += 3 / 4))
+
+      if (charCode > 0xff) {
+        throw new Error(
+          "'btoa' failed: The string to be encoded contains characters outside of the Latin1 range."
+        )
+      }
+
+      block = (block << 8) | charCode
+    }
+
+    return output
+  },
+
+  atob: (input = '') => {
+    let str = input.replace(/=+$/, '')
+    let output = ''
+
+    if (str.length % 4 == 1) {
+      throw new Error(
+        "'atob' failed: The string to be decoded is not correctly encoded."
+      )
+    }
+    for (
+      let bc = 0, bs = 0, buffer, i = 0;
+      (buffer = str.charAt(i++));
+      ~buffer && ((bs = bc % 4 ? bs * 64 + buffer : buffer), bc++ % 4)
+        ? (output += String.fromCharCode(255 & (bs >> ((-2 * bc) & 6))))
+        : 0
+    ) {
+      buffer = chars.indexOf(buffer)
+    }
+
+    return output
+  },
+}
+
+export default Base64
diff --git a/lib/toBase64.js b/lib/toBase64.js
index 86243d9..7a32b8d 100644
--- a/lib/toBase64.js
+++ b/lib/toBase64.js
@@ -1,8 +1,10 @@
-export default function b64EncodeUnicode(str) {
+import Base64 from './Base64'
+
+function b64EncodeUnicode(str) {
   // first we use encodeURIComponent to get percent-encoded UTF-8,
   // then we convert the percent encodings into raw bytes which
   // can be fed into btoa.
-  return btoa(
+  return Base64.btoa(
     encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function toSolidBytes(
       match,
       p1
@@ -11,3 +13,5 @@ export default function b64EncodeUnicode(str) {
     })
   )
 }
+
+export default b64EncodeUnicode
diff --git a/package.json b/package.json
index 044e739..e551280 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "conekta-react-native",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "React Native Conekta wrapper",
   "main": "index.js",
   "scripts": {
@@ -23,7 +23,7 @@
   "author": "nure",
   "license": "MIT",
   "dependencies": {
-    "react-native-uuid": "^1.4.9",
-    "buffer": "^5.2.0"
+    "buffer": "^5.2.0",
+    "react-native-uuid": "^1.4.9"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 8651d57..449ffb0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -13,6 +13,10 @@ buffer@^5.2.0:
     base64-js "^1.0.2"
     ieee754 "^1.1.4"
 
+conekta.js@^0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/conekta.js/-/conekta.js-0.5.0.tgz#2010377cf52d7cd110c994b1451961b0a80ff9ed"
+
 ieee754@^1.1.4:
   version "1.1.12"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.12.tgz#50bf24e5b9c8bb98af4964c941cdb0918da7b60b"