diff --git a/package.json b/package.json
index e39414c..74f838f 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "url": "git://github.com/davidchambers/xyz.git"
   },
   "dependencies": {
-    "semver": "4.1.x"
+    "semver": "5.3.x"
   },
   "bundledDependencies": [
     "semver"