diff --git a/README.md b/README.md
index 65abe97..7ca8f2f 100644
--- a/README.md
+++ b/README.md
@@ -38,22 +38,6 @@ composer require p3k/xray
 
 You can also [download a release](https://github.com/aaronpk/XRay/releases) which is a zip file with all dependencies already installed.
 
-**Note** XRay uses the HTMLPurifier library, which is in the process of updating to support newer PHP versions. Until they release an update beyond `v4.9.3`, you will need to add the following to your `composer.json` file in order to tell your project it's okay to install the dev-master version:
-
-```json
-{
-  "require": {
-    "ezyang/htmlpurifier": "dev-master#6d6d88512a8146939a9161bb03e95e3e97840439@dev"
-  },
-  "repositories": [
-    {
-      "type": "git",
-      "url": "https://github.com/ezyang/htmlpurifier.git"
-    }
-  ]
-}
-```
-
 ### Parsing
 
 ```php
diff --git a/composer.json b/composer.json
index 262b04c..768e988 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
   "description": "X-Ray returns structured data from any URL",
   "require": {
     "mf2/mf2": "^0.3.2",
-    "ezyang/htmlpurifier": "dev-master#6d6d88512a8146939a9161bb03e95e3e97840439@dev",
+    "ezyang/htmlpurifier": "4.10.*",
     "indieweb/link-rel-parser": "0.1.*",
     "dg/twitter-php": "3.6.*",
     "p3k/timezone": "*",
@@ -38,11 +38,5 @@
       "controllers/Feeds.php",
       "controllers/Certbot.php"
     ]
-  },
-  "repositories": [
-    {
-      "type": "git",
-      "url": "https://github.com/ezyang/htmlpurifier.git"
-    }
-  ]
+  }
 }
diff --git a/composer.lock b/composer.lock
index 8cfae22..80519c6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "bcdd53e30f9960f6b39b0aa2c74d5457",
+    "content-hash": "59d3e49509e8de79d4f07f04d2259a4c",
     "packages": [
         {
             "name": "cebe/markdown",
@@ -110,11 +110,17 @@
         },
         {
             "name": "ezyang/htmlpurifier",
-            "version": "dev-master",
+            "version": "v4.10.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ezyang/htmlpurifier.git",
-                "reference": "6d6d88512a8146939a9161bb03e95e3e97840439"
+                "reference": "d85d39da4576a6934b72480be6978fb10c860021"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/d85d39da4576a6934b72480be6978fb10c860021",
+                "reference": "d85d39da4576a6934b72480be6978fb10c860021",
+                "shasum": ""
             },
             "require": {
                 "php": ">=5.2"
@@ -131,6 +137,7 @@
                     "library/HTMLPurifier.composer.php"
                 ]
             },
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "LGPL"
             ],
@@ -146,7 +153,7 @@
             "keywords": [
                 "html"
             ],
-            "time": "2017-12-30T05:23:44+00:00"
+            "time": "2018-02-23T01:58:20+00:00"
         },
         {
             "name": "facebook/graph-sdk",
@@ -2082,9 +2089,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "ezyang/htmlpurifier": 20
-    },
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],