diff --git a/README.md b/README.md
index a96a8df..0a3857c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# XRegExp 4.4.1-next
+# XRegExp 5.0.0-next
 
 [![Build Status](https://github.com/slevithan/xregexp/workflows/Node.js%20CI/badge.svg)](https://github.com/slevithan/xregexp/actions)
 
diff --git a/package-lock.json b/package-lock.json
index a415e2b..5b76587 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "xregexp",
-  "version": "4.4.1",
+  "version": "5.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "4.4.1",
+      "version": "5.0.0",
       "license": "MIT",
       "dependencies": {
         "@babel/runtime-corejs3": "^7.12.1"
diff --git a/package.json b/package.json
index 3ee6931..3d01284 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xregexp",
-  "version": "4.4.1",
+  "version": "5.0.0",
   "description": "Extended regular expressions",
   "homepage": "http://xregexp.com/",
   "author": "Steven Levithan <steves_list@hotmail.com>",
diff --git a/src/addons/build.js b/src/addons/build.js
index 3259662..55efe9f 100644
--- a/src/addons/build.js
+++ b/src/addons/build.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp.build 4.4.1
+ * XRegExp.build 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2012-present MIT License
  */
diff --git a/src/addons/matchrecursive.js b/src/addons/matchrecursive.js
index 53a959c..26f788c 100644
--- a/src/addons/matchrecursive.js
+++ b/src/addons/matchrecursive.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp.matchRecursive 4.4.1
+ * XRegExp.matchRecursive 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2009-present MIT License
  */
diff --git a/src/addons/unicode-base.js b/src/addons/unicode-base.js
index d5d4e86..b40aebb 100644
--- a/src/addons/unicode-base.js
+++ b/src/addons/unicode-base.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp Unicode Base 4.4.1
+ * XRegExp Unicode Base 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2008-present MIT License
  */
diff --git a/src/addons/unicode-categories.js b/src/addons/unicode-categories.js
index db542a5..1b496bc 100644
--- a/src/addons/unicode-categories.js
+++ b/src/addons/unicode-categories.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp Unicode Categories 4.4.1
+ * XRegExp Unicode Categories 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2010-present MIT License
  * Unicode data by Mathias Bynens <mathiasbynens.be>
diff --git a/src/addons/unicode-properties.js b/src/addons/unicode-properties.js
index c3b5a0f..852d3a1 100644
--- a/src/addons/unicode-properties.js
+++ b/src/addons/unicode-properties.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp Unicode Properties 4.4.1
+ * XRegExp Unicode Properties 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2012-present MIT License
  * Unicode data by Mathias Bynens <mathiasbynens.be>
diff --git a/src/addons/unicode-scripts.js b/src/addons/unicode-scripts.js
index 3ac0837..6121c9f 100644
--- a/src/addons/unicode-scripts.js
+++ b/src/addons/unicode-scripts.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp Unicode Scripts 4.4.1
+ * XRegExp Unicode Scripts 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2010-present MIT License
  * Unicode data by Mathias Bynens <mathiasbynens.be>
diff --git a/src/xregexp.js b/src/xregexp.js
index a386b05..098694d 100644
--- a/src/xregexp.js
+++ b/src/xregexp.js
@@ -1,5 +1,5 @@
 /*!
- * XRegExp 4.4.1
+ * XRegExp 5.0.0
  * <xregexp.com>
  * Steven Levithan (c) 2007-present MIT License
  */
@@ -646,7 +646,7 @@ XRegExp.prototype = new RegExp();
  * @memberOf XRegExp
  * @type String
  */
-XRegExp.version = '4.4.1';
+XRegExp.version = '5.0.0';
 
 // ==--------------------------==
 // Public methods