diff --git a/angular-semver-sort.js b/angular-semver-sort.js
index e5a4447..5c145b4 100644
--- a/angular-semver-sort.js
+++ b/angular-semver-sort.js
@@ -361,6 +361,10 @@ SemVer.prototype.inc = function(release) {
       this.inc('pre');
       break;
     case 'prepatch':
+      // If this is already a prerelease, it will bump to the next version
+      // drop any prereleases that might already exist, since they are not
+      // relevant at this point.
+      this.prerelease.length = 0
       this.inc('patch');
       this.inc('pre');
       break;
diff --git a/package.json b/package.json
index 00de7bc..1078562 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "author": "Dominik Porada",
   "license": "BSD",
   "dependencies": {
-    "semver": "2.3.0"
+    "semver": "2.3.1"
   },
   "devDependencies": {
     "karma": "~0.12.16",