diff --git a/package.json b/package.json
index c3ded9f..dabcd12 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "mocha": "^6.0.0",
     "nyc": "^13.1.0",
     "prettier": "^1.14.3",
-    "semver": "^5.3.0",
+    "semver": "^6.0.0",
     "sinon": "^7.0.0",
     "unexpected": "^11.0.0",
     "unexpected-sinon": "^10.7.1",