diff --git a/package.json b/package.json
index 5f497abc..462e52fa 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "primer-tooltips": "1.5.1",
     "read": "1.0.7",
     "request": "2.83.0",
-    "semver": "5.4.1",
+    "semver": "5.5.0",
     "socket.io": "2.0.4",
     "spdy": "3.4.7",
     "ua-parser-js": "0.7.17",