diff --git a/minimatch.js b/minimatch.js
index aebd08e6..1fcfb624 100644
--- a/minimatch.js
+++ b/minimatch.js
@@ -1,10 +1,8 @@
 module.exports = minimatch
 minimatch.Minimatch = Minimatch
 
-var LRU = require("lru-cache")
-  , cache = minimatch.cache = new LRU({max: 100})
-  , GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {}
-  , sigmund = require("sigmund")
+var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {}
+  , expand = require("brace-expansion")
 
   // any single thing other than /
   // don't need to escape / when using new RegExp()
@@ -99,7 +97,7 @@ function minimatch (p, pattern, options) {
 
 function Minimatch (pattern, options) {
   if (!(this instanceof Minimatch)) {
-    return new Minimatch(pattern, options, cache)
+    return new Minimatch(pattern, options)
   }
 
   if (typeof pattern !== "string") {
@@ -109,14 +107,6 @@ function Minimatch (pattern, options) {
   if (!options) options = {}
   pattern = pattern.trim()
 
-  // lru storage.
-  // these things aren't particularly big, but walking down the string
-  // and turning it into a regexp can get pretty costly.
-  var cacheKey = pattern + "\n" + sigmund(options)
-  var cached = minimatch.cache.get(cacheKey)
-  if (cached) return cached
-  minimatch.cache.set(cacheKey, this)
-
   this.options = options
   this.set = []
   this.pattern = pattern
@@ -218,19 +208,19 @@ function parseNegate () {
 // a{2..}b -> a{2..}b
 // a{b}c -> a{b}c
 minimatch.braceExpand = function (pattern, options) {
-  return new Minimatch(pattern, options).braceExpand()
+  return braceExpand(pattern, options)
 }
 
 Minimatch.prototype.braceExpand = braceExpand
 
-function pad(n, width, z) {
-  z = z || '0';
-  n = n + '';
-  return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
-}
-
 function braceExpand (pattern, options) {
-  options = options || this.options
+  if (!options) {
+    if (this instanceof Minimatch)
+      options = this.options
+    else
+      options = {}
+  }
+
   pattern = typeof pattern === "undefined"
     ? this.pattern : pattern
 
@@ -244,187 +234,7 @@ function braceExpand (pattern, options) {
     return [pattern]
   }
 
-  var escaping = false
-
-  // examples and comments refer to this crazy pattern:
-  // a{b,c{d,e},{f,g}h}x{y,z}
-  // expected:
-  // abxy
-  // abxz
-  // acdxy
-  // acdxz
-  // acexy
-  // acexz
-  // afhxy
-  // afhxz
-  // aghxy
-  // aghxz
-
-  // everything before the first \{ is just a prefix.
-  // So, we pluck that off, and work with the rest,
-  // and then prepend it to everything we find.
-  if (pattern.charAt(0) !== "{") {
-    this.debug(pattern)
-    var prefix = null
-    for (var i = 0, l = pattern.length; i < l; i ++) {
-      var c = pattern.charAt(i)
-      this.debug(i, c)
-      if (c === "\\") {
-        escaping = !escaping
-      } else if (c === "{" && !escaping) {
-        prefix = pattern.substr(0, i)
-        break
-      }
-    }
-
-    // actually no sets, all { were escaped.
-    if (prefix === null) {
-      this.debug("no sets")
-      return [pattern]
-    }
-
-   var tail = braceExpand.call(this, pattern.substr(i), options)
-    return tail.map(function (t) {
-      return prefix + t
-    })
-  }
-
-  // now we have something like:
-  // {b,c{d,e},{f,g}h}x{y,z}
-  // walk through the set, expanding each part, until
-  // the set ends.  then, we'll expand the suffix.
-  // If the set only has a single member, then'll put the {} back
-
-  // first, handle numeric sets, since they're easier
-  var numset = pattern.match(/^\{(-?[0-9]+)\.\.(-?[0-9]+)\}/)
-  if (numset) {
-    this.debug("numset", numset[1], numset[2])
-    var suf = braceExpand.call(this, pattern.substr(numset[0].length), options)
-      , start = +numset[1]
-      , needPadding = numset[1][0] === '0'
-      , startWidth = numset[1].length
-      , padded
-      , end = +numset[2]
-      , inc = start > end ? -1 : 1
-      , set = []
-
-    for (var i = start; i != (end + inc); i += inc) {
-      padded = needPadding ? pad(i, startWidth) : i + ''
-      // append all the suffixes
-      for (var ii = 0, ll = suf.length; ii < ll; ii ++) {
-        set.push(padded + suf[ii])
-      }
-    }
-    return set
-  }
-
-  // ok, walk through the set
-  // We hope, somewhat optimistically, that there
-  // will be a } at the end.
-  // If the closing brace isn't found, then the pattern is
-  // interpreted as braceExpand("\\" + pattern) so that
-  // the leading \{ will be interpreted literally.
-  var i = 1 // skip the \{
-    , depth = 1
-    , set = []
-    , member = ""
-    , sawEnd = false
-    , escaping = false
-
-  function addMember () {
-    set.push(member)
-    member = ""
-  }
-
-  this.debug("Entering for")
-  FOR: for (i = 1, l = pattern.length; i < l; i ++) {
-    var c = pattern.charAt(i)
-    this.debug("", i, c)
-
-    if (escaping) {
-      escaping = false
-      member += "\\" + c
-    } else {
-      switch (c) {
-        case "\\":
-          escaping = true
-          continue
-
-        case "{":
-          depth ++
-          member += "{"
-          continue
-
-        case "}":
-          depth --
-          // if this closes the actual set, then we're done
-          if (depth === 0) {
-            addMember()
-            // pluck off the close-brace
-            i ++
-            break FOR
-          } else {
-            member += c
-            continue
-          }
-
-        case ",":
-          if (depth === 1) {
-            addMember()
-          } else {
-            member += c
-          }
-          continue
-
-        default:
-          member += c
-          continue
-      } // switch
-    } // else
-  } // for
-
-  // now we've either finished the set, and the suffix is
-  // pattern.substr(i), or we have *not* closed the set,
-  // and need to escape the leading brace
-  if (depth !== 0) {
-    this.debug("didn't close", pattern)
-    return braceExpand.call(this, "\\" + pattern, options)
-  }
-
-  // x{y,z} -> ["xy", "xz"]
-  this.debug("set", set)
-  this.debug("suffix", pattern.substr(i))
-  var suf = braceExpand.call(this, pattern.substr(i), options)
-  // ["b", "c{d,e}","{f,g}h"] ->
-  //   [["b"], ["cd", "ce"], ["fh", "gh"]]
-  var addBraces = set.length === 1
-  this.debug("set pre-expanded", set)
-  set = set.map(function (p) {
-    return braceExpand.call(this, p, options)
-  }, this)
-  this.debug("set expanded", set)
-
-
-  // [["b"], ["cd", "ce"], ["fh", "gh"]] ->
-  //   ["b", "cd", "ce", "fh", "gh"]
-  set = set.reduce(function (l, r) {
-    return l.concat(r)
-  })
-
-  if (addBraces) {
-    set = set.map(function (s) {
-      return "{" + s + "}"
-    })
-  }
-
-  // now attach the suffixes.
-  var ret = []
-  for (var i = 0, l = set.length; i < l; i ++) {
-    for (var ii = 0, ll = suf.length; ii < ll; ii ++) {
-      ret.push(set[i] + suf[ii])
-    }
-  }
-  return ret
+  return expand(pattern)
 }
 
 // parse a component of the expanded set.
diff --git a/package.json b/package.json
index 775bc81e..ee7725a8 100644
--- a/package.json
+++ b/package.json
@@ -16,9 +16,7 @@
     "node": "*"
   },
   "dependencies": {
-    "brace-expansion": "^1.0.0",
-    "lru-cache": "2",
-    "sigmund": "~1.0.0"
+    "brace-expansion": "^1.0.0"
   },
   "devDependencies": {
     "browserify": "^6.3.3",
diff --git a/test/caching.js b/test/caching.js
deleted file mode 100644
index 0fec4b0f..00000000
--- a/test/caching.js
+++ /dev/null
@@ -1,14 +0,0 @@
-var Minimatch = require("../minimatch.js").Minimatch
-var tap = require("tap")
-tap.test("cache test", function (t) {
-  var mm1 = new Minimatch("a?b")
-  var mm2 = new Minimatch("a?b")
-  t.equal(mm1, mm2, "should get the same object")
-  // the lru should drop it after 100 entries
-  for (var i = 0; i < 100; i ++) {
-    new Minimatch("a"+i)
-  }
-  mm2 = new Minimatch("a?b")
-  t.notEqual(mm1, mm2, "cache should have dropped")
-  t.end()
-})