diff --git a/monitoring/snippets/package-lock.json b/monitoring/snippets/package-lock.json
index c0c8ccb8ff..d6d5326892 100644
--- a/monitoring/snippets/package-lock.json
+++ b/monitoring/snippets/package-lock.json
@@ -2725,7 +2725,8 @@
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -3190,7 +3191,8 @@
           "version": "5.1.1",
           "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
           "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3254,6 +3256,7 @@
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -3302,13 +3305,15 @@
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
           "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -8322,18 +8327,18 @@
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
     },
     "sinon": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.5.0.tgz",
-      "integrity": "sha512-trdx+mB0VBBgoYucy6a9L7/jfQOmvGeaKZT4OOJ+lPAtI8623xyGr8wLiE4eojzBS8G9yXbhx42GHUOVLr4X2w==",
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-6.0.1.tgz",
+      "integrity": "sha512-rfszhNcfamK2+ofIPi9XqeH89pH7KGDcAtM+F9CsjHXOK3jzWG99vyhyD2V+r7s4IipmWcWUFYq4ftZ9/Eu2Wg==",
       "dev": true,
       "requires": {
         "@sinonjs/formatio": "^2.0.0",
-        "diff": "^3.1.0",
+        "diff": "^3.5.0",
         "lodash.get": "^4.4.2",
-        "lolex": "^2.2.0",
-        "nise": "^1.2.0",
-        "supports-color": "^5.1.0",
-        "type-detect": "^4.0.5"
+        "lolex": "^2.4.2",
+        "nise": "^1.3.3",
+        "supports-color": "^5.4.0",
+        "type-detect": "^4.0.8"
       }
     },
     "slash": {
diff --git a/monitoring/snippets/package.json b/monitoring/snippets/package.json
index ef92d22e6c..72d0ab73c7 100644
--- a/monitoring/snippets/package.json
+++ b/monitoring/snippets/package.json
@@ -6,19 +6,19 @@
   "author": "Google Inc.",
   "repository": "googleapis/nodejs-monitoring",
   "engines": {
-    "node": ">=4.0.0"
+    "node": ">=6.0.0"
   },
   "scripts": {
     "test": "ava -T 3m --verbose system-test/*.test.js"
   },
   "dependencies": {
-    "@google-cloud/monitoring": "0.5.0",
-    "yargs": "12.0.0"
+    "@google-cloud/monitoring": "^0.5.0",
+    "yargs": "^12.0.0"
   },
   "devDependencies": {
-    "@google-cloud/nodejs-repo-tools": "2.3.0",
-    "ava": "0.25.0",
-    "proxyquire": "2.0.1",
-    "sinon": "4.5.0"
+    "@google-cloud/nodejs-repo-tools": "^2.3.0",
+    "ava": "^0.25.0",
+    "proxyquire": "^2.0.1",
+    "sinon": "^6.0.1"
   }
 }