diff --git a/package-lock.json b/package-lock.json
index 09d9b49..8779cfb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -461,7 +461,8 @@
     "duplexer": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
-      "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E="
+      "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
+      "dev": true
     },
     "error-ex": {
       "version": "1.3.1",
@@ -803,6 +804,7 @@
       "version": "3.3.4",
       "resolved": "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz",
       "integrity": "sha1-SrTJoPWlTbkzi0w02Gv86PSzVXE=",
+      "dev": true,
       "requires": {
         "duplexer": "0.1.1",
         "from": "0.1.7",
@@ -894,7 +896,8 @@
     "from": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/from/-/from-0.1.7.tgz",
-      "integrity": "sha1-g8YK/Fi5xWmXAH7Rp2izqzA6RP4="
+      "integrity": "sha1-g8YK/Fi5xWmXAH7Rp2izqzA6RP4=",
+      "dev": true
     },
     "fs.realpath": {
       "version": "1.0.0",
@@ -1376,7 +1379,8 @@
     "map-stream": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/map-stream/-/map-stream-0.1.0.tgz",
-      "integrity": "sha1-5WqpTEyAVaFkBKBnS3jyFffI4ZQ="
+      "integrity": "sha1-5WqpTEyAVaFkBKBnS3jyFffI4ZQ=",
+      "dev": true
     },
     "mimic-fn": {
       "version": "1.1.0",
@@ -1606,6 +1610,7 @@
       "version": "0.0.11",
       "resolved": "https://registry.npmjs.org/pause-stream/-/pause-stream-0.0.11.tgz",
       "integrity": "sha1-/lo0sMvOErWqaitAPuLnO2AvFEU=",
+      "dev": true,
       "requires": {
         "through": "2.3.8"
       }
@@ -1927,6 +1932,7 @@
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/split/-/split-0.3.3.tgz",
       "integrity": "sha1-zQ7qXmOiEd//frDwkcQTPi0N0o8=",
+      "dev": true,
       "requires": {
         "through": "2.3.8"
       }
@@ -1941,6 +1947,7 @@
       "version": "0.0.4",
       "resolved": "https://registry.npmjs.org/stream-combiner/-/stream-combiner-0.0.4.tgz",
       "integrity": "sha1-TV5DPBhSYd3mI8o/RMWGvPXErRQ=",
+      "dev": true,
       "requires": {
         "duplexer": "0.1.1"
       }
@@ -2061,7 +2068,8 @@
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
     },
     "through2": {
       "version": "2.0.3",
diff --git a/package.json b/package.json
index 0f2031d..8af2acf 100644
--- a/package.json
+++ b/package.json
@@ -49,10 +49,10 @@
     "eslint-plugin-promise": "^3.6.0",
     "eslint-plugin-standard": "^3.0.1",
     "istanbul": "^0.4.5",
-    "mocha": "^5.0.0"
+    "mocha": "^5.0.0",
+    "event-stream": "^3.3.4"
   },
   "dependencies": {
-    "event-stream": "^3.3.4",
     "plugin-error": "^1.0.1",
     "through2": "^2.0.3",
     "vinyl": "^2.1.0",