diff --git a/node_modules/semver/README.md b/node_modules/semver/README.md
index 951c53956a24b..9f7161e2cef59 100644
--- a/node_modules/semver/README.md
+++ b/node_modules/semver/README.md
@@ -274,7 +274,7 @@ logical-or ::= ( ' ' ) * '||' ( ' ' ) *
 range      ::= hyphen | simple ( ' ' simple ) * | ''
 hyphen     ::= partial ' - ' partial
 simple     ::= primitive | partial | tilde | caret
-primitive  ::= ( '<' | '>' | '>=' | '<=' | '=' | ) partial
+primitive  ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
 partial    ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
 xr         ::= 'x' | 'X' | '*' | nr
 nr         ::= '0' | ['1'-'9'] ( ['0'-'9'] ) *
diff --git a/node_modules/semver/package.json b/node_modules/semver/package.json
index 5919ebef9bc79..d7d4cbb12892c 100644
--- a/node_modules/semver/package.json
+++ b/node_modules/semver/package.json
@@ -1,27 +1,22 @@
 {
-  "_args": [
-    [
-      "semver@5.5.0",
-      "/Users/rebecca/code/npm"
-    ]
-  ],
-  "_from": "semver@5.5.0",
-  "_id": "semver@5.5.0",
+  "_from": "semver@5.5.1",
+  "_id": "semver@5.5.1",
   "_inBundle": false,
-  "_integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA==",
+  "_integrity": "sha512-PqpAxfrEhlSUWge8dwIp4tZnQ25DIOthpiaHNIthsjEFQD6EvqUKUDM7L8O2rShkFccYo1VjJR0coWfNkCubRw==",
   "_location": "/semver",
   "_phantomChildren": {},
   "_requested": {
     "type": "version",
     "registry": true,
-    "raw": "semver@5.5.0",
+    "raw": "semver@5.5.1",
     "name": "semver",
     "escapedName": "semver",
-    "rawSpec": "5.5.0",
+    "rawSpec": "5.5.1",
     "saveSpec": null,
-    "fetchSpec": "5.5.0"
+    "fetchSpec": "5.5.1"
   },
   "_requiredBy": [
+    "#USER",
     "/",
     "/eslint",
     "/eslint-plugin-node",
@@ -37,8 +32,9 @@
     "/read-installed",
     "/semver-diff"
   ],
-  "_resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
-  "_spec": "5.5.0",
+  "_resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
+  "_shasum": "7dfdd8814bdb7cabc7be0fb1d734cfb66c940477",
+  "_spec": "semver@5.5.1",
   "_where": "/Users/rebecca/code/npm",
   "bin": {
     "semver": "./bin/semver"
@@ -46,9 +42,11 @@
   "bugs": {
     "url": "https://github.com/npm/node-semver/issues"
   },
+  "bundleDependencies": false,
+  "deprecated": false,
   "description": "The semantic version parser used by npm.",
   "devDependencies": {
-    "tap": "^10.7.0"
+    "tap": "^12.0.1"
   },
   "files": [
     "bin",
@@ -66,5 +64,5 @@
   "scripts": {
     "test": "tap test/*.js --cov -J"
   },
-  "version": "5.5.0"
+  "version": "5.5.1"
 }
diff --git a/package-lock.json b/package-lock.json
index e67b9f6254e4b..437894d245858 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6629,9 +6629,9 @@
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
     "semver": {
-      "version": "5.5.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
-      "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA=="
+      "version": "5.5.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
+      "integrity": "sha512-PqpAxfrEhlSUWge8dwIp4tZnQ25DIOthpiaHNIthsjEFQD6EvqUKUDM7L8O2rShkFccYo1VjJR0coWfNkCubRw=="
     },
     "semver-diff": {
       "version": "2.1.0",
diff --git a/package.json b/package.json
index a096e04b49770..687911f1bac34 100644
--- a/package.json
+++ b/package.json
@@ -121,7 +121,7 @@
     "retry": "^0.12.0",
     "rimraf": "~2.6.2",
     "safe-buffer": "^5.1.2",
-    "semver": "^5.5.0",
+    "semver": "^5.5.1",
     "sha": "~2.0.1",
     "slide": "~1.1.6",
     "sorted-object": "~2.0.1",