diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..cf678794
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,7 @@
+/node_modules
+/coverage
+/tmp
+.DS_Store
+.cache
+/*.log
+.clinic/
diff --git a/lib/specifier.js b/lib/specifier.js
index 564a42c1..0c58f7bf 100644
--- a/lib/specifier.js
+++ b/lib/specifier.js
@@ -2,7 +2,6 @@
 // 2.0, and the BSD License. See the LICENSE file in the root of this repository
 // for complete details.
 
-const XRegExp = require("xregexp");
 const { VERSION_PATTERN, explain: explainVersion } = require("./version");
 
 const Operator = require("./operator");
@@ -30,7 +29,7 @@ module.exports = {
 
 const isEqualityOperator = (op) => ["==", "!=", "==="].includes(op);
 
-const rangeRegex = new XRegExp("^" + RANGE_PATTERN + "$", "i");
+const rangeRegex = new RegExp("^" + RANGE_PATTERN + "$", "i");
 
 function parse(ranges) {
   if (!ranges.trim()) {
@@ -39,8 +38,8 @@ function parse(ranges) {
 
   const specifiers = ranges
     .split(",")
-    .map((range) => XRegExp.exec(range.trim(), rangeRegex))
-    .map((groups) => {
+    .map((range) => rangeRegex.exec(range.trim()) || {})
+    .map(({ groups }) => {
       if (!groups) {
         return null;
       }
diff --git a/lib/version.js b/lib/version.js
index c331b400..9fee351e 100644
--- a/lib/version.js
+++ b/lib/version.js
@@ -1,5 +1,3 @@
-const XRegExp = require("xregexp");
-
 const VERSION_PATTERN = [
   "v?",
   "(?:",
@@ -40,20 +38,20 @@ module.exports = {
   stringify,
 };
 
-const validRegex = new XRegExp("^" + VERSION_PATTERN + "$", "i");
+const validRegex = new RegExp("^" + VERSION_PATTERN + "$", "i");
 
 function valid(version) {
   return validRegex.test(version) ? version : null;
 }
 
-const cleanRegex = new XRegExp("^\\s*" + VERSION_PATTERN + "\\s*$", "i");
+const cleanRegex = new RegExp("^\\s*" + VERSION_PATTERN + "\\s*$", "i");
 function clean(version) {
   return stringify(parse(version, cleanRegex));
 }
 
 function parse(version, regex) {
   // Validate the version and parse it into pieces
-  const groups = XRegExp.exec(version, regex || validRegex);
+  const { groups } = (regex || validRegex).exec(version) || {};
   if (!groups) {
     return null;
   }
diff --git a/package.json b/package.json
index c4db089d..342dc8f2 100644
--- a/package.json
+++ b/package.json
@@ -57,8 +57,5 @@
     "index.js",
     "lib",
     "index.d.ts"
-  ],
-  "dependencies": {
-    "xregexp": "4.4.1"
-  }
+  ]
 }
diff --git a/yarn.lock b/yarn.lock
index b19d43c7..7e1b8d90 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -403,14 +403,6 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.16.7"
 
-"@babel/runtime-corejs3@^7.12.1":
-  version "7.16.5"
-  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs3/-/runtime-corejs3-7.16.5.tgz#9057d879720c136193f0440bc400088212a74894"
-  integrity sha512-F1pMwvTiUNSAM8mc45kccMQxj31x3y3P+tA/X8hKNWp3/hUsxdGxZ3D3H8JIkxtfA8qGkaBTKvcmvStaYseAFw==
-  dependencies:
-    core-js-pure "^3.19.0"
-    regenerator-runtime "^0.13.4"
-
 "@babel/template@^7.16.0", "@babel/template@^7.3.3":
   version "7.16.0"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.16.0.tgz#d16a35ebf4cd74e202083356fab21dd89363ddd6"
@@ -1200,11 +1192,6 @@ convert-source-map@^1.4.0, convert-source-map@^1.6.0, convert-source-map@^1.7.0:
   dependencies:
     safe-buffer "~5.1.1"
 
-core-js-pure@^3.19.0:
-  version "3.20.1"
-  resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.20.1.tgz#f7a2c62f98de83e4da8fca7b78846d3a2f542145"
-  integrity sha512-yeNNr3L9cEBwNy6vhhIJ0nko7fE7uFO6PgawcacGt2VWep4WqQx0RiqlkgSP7kqUMC1IKdfO9qPeWXcUheHLVQ==
-
 cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
@@ -3092,11 +3079,6 @@ read-pkg@^3.0.0:
     normalize-package-data "^2.3.2"
     path-type "^3.0.0"
 
-regenerator-runtime@^0.13.4:
-  version "0.13.9"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.9.tgz#8925742a98ffd90814988d7566ad30ca3b263b52"
-  integrity sha512-p3VT+cOEgxFsRRA9X4lkI1E+k2/CtnKtU4gcxyaCUreilL/vqI6CdZ3wxVUx3UOUg+gnUOQQcRI7BmSI656MYA==
-
 regexpp@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-3.2.0.tgz#0425a2768d8f23bad70ca4b90461fa2f1213e1b2"
@@ -3717,13 +3699,6 @@ xmlchars@^2.2.0:
   resolved "https://registry.yarnpkg.com/xmlchars/-/xmlchars-2.2.0.tgz#060fe1bcb7f9c76fe2a17db86a9bc3ab894210cb"
   integrity sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==
 
-xregexp@4.4.1:
-  version "4.4.1"
-  resolved "https://registry.yarnpkg.com/xregexp/-/xregexp-4.4.1.tgz#c84a88fa79e9ab18ca543959712094492185fe65"
-  integrity sha512-2u9HwfadaJaY9zHtRRnH6BY6CQVNQKkYm3oLtC9gJXXzfsbACg5X5e4EZZGVAH+YIfa+QA9lsFQTTe3HURF3ag==
-  dependencies:
-    "@babel/runtime-corejs3" "^7.12.1"
-
 y18n@^5.0.5:
   version "5.0.8"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-5.0.8.tgz#7f4934d0f7ca8c56f95314939ddcd2dd91ce1d55"