diff --git a/README.md b/README.md
index 69cfc87c..8ea16bf2 100644
--- a/README.md
+++ b/README.md
@@ -29,15 +29,6 @@ If you want to run the latest version (i.e. later than the version available via
 Of course, you can just clone this, and manually point at the library itself,
 but we really recommend using [npm](http://github.com/isaacs/npm)!
 
-Note that as of version 0.3.8, node-irc supports character set detection using
-[icu](http://site.icu-project.org/). You'll need to install libiconv (if
-necessary; Linux systems tend to ship this in their glibc) and libicu (and its
-headers, if necessary, [install instructions](https://github.com/mooz/node-icu-charset-detector#installing-icu)) in order to use this feature. If you do not have these
-libraries or their headers installed, you will receive errors when trying to
-build these dependencies. However, node-irc will still install (assuming
-nothing else failed) and you'll be able to use it, just not the character
-set features.
-
 ## Basic Usage
 
 This library provides basic IRC client functionality. In the simplest case you
diff --git a/lib/irc.js b/lib/irc.js
index 23ccfe08..2d8935c0 100644
--- a/lib/irc.js
+++ b/lib/irc.js
@@ -348,6 +348,9 @@ function Client(server, nick, opt) {
                 // TODO better way of finding what channels a user is in?
                 Object.keys(self.chans).forEach(function(channame) {
                     var channel = self.chans[channame];
+                    if (!channel.users.hasOwnProperty(message.nick)) {
+                        return;
+                    }
                     channel.users[message.args[0]] = channel.users[message.nick];
                     delete channel.users[message.nick];
                     channels.push(channame);
@@ -1138,9 +1141,9 @@ Client.prototype.convertEncoding = function(str) {
 
     if (self.opt.encoding) {
         try {
-            var charsetDetector = require('node-icu-charset-detector');
+            var charsetDetector = require('detect-character-encoding');
             var Iconv = require('iconv').Iconv;
-            var charset = charsetDetector.detectCharset(str);
+            var charset = charsetDetector(str);
             var converter = new Iconv(charset.toString(), self.opt.encoding);
 
             out = converter.convert(str);
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 00000000..42b6c50f
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1331 @@
+{
+  "name": "irc",
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+  "lockfileVersion": 1,
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+      "dev": true
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+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
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+    "argparse": {
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+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
+    "async": {
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+    },
+    "xtend": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-2.1.2.tgz",
+      "integrity": "sha1-bv7MKk2tjmlixJAbM3znuoe10os=",
+      "dev": true,
+      "requires": {
+        "object-keys": "~0.4.0"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
index f70dcdbe..94a3ac93 100644
--- a/package.json
+++ b/package.json
@@ -31,16 +31,16 @@
   },
   "license": "GPL-3.0",
   "dependencies": {
-    "irc-colors": "^1.1.0"
+    "irc-colors": "^1.5.0"
   },
   "optionalDependencies": {
-    "iconv": "~2.2.1",
-    "node-icu-charset-detector": "~0.2.0"
+    "iconv": "~2.3.5",
+    "detect-character-encoding": "~0.8.0"
   },
   "devDependencies": {
     "ansi-color": "0.2.1",
     "faucet": "0.0.1",
-    "jscs": "1.9.0",
-    "tape": "^3.0.3"
+    "jscs": "3.0.7",
+    "tape": "^4.13.2"
   }
 }
diff --git a/test/test-convert-encoding.js b/test/test-convert-encoding.js
index bbd62fac..8efbd4e2 100644
--- a/test/test-convert-encoding.js
+++ b/test/test-convert-encoding.js
@@ -9,9 +9,9 @@ test('irc.Client.convertEncoding old', function(assert) {
         var self = this;
 
         if (self.opt.encoding) {
-            var charsetDetector = require('node-icu-charset-detector');
+            var charsetDetector = require('detect-character-encoding');
             var Iconv = require('iconv').Iconv;
-            var charset = charsetDetector.detectCharset(str).toString();
+            var charset = charsetDetector(str).toString();
             var to = new Iconv(charset, self.opt.encoding);
 
             return to.convert(str);