diff --git a/package-lock.json b/package-lock.json
index f64e719..f1d14be 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -326,8 +326,20 @@
         "ini": "^1.3.4",
         "lodash": "^4.17.5",
         "lossless-json": "^1.0.2",
-        "optimist": "latest",
+        "optimist": "^0.6.1",
         "request": "2.x.x"
+      },
+      "dependencies": {
+        "optimist": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
+          "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
+          "dev": true,
+          "requires": {
+            "minimist": "~0.0.1",
+            "wordwrap": "~0.0.2"
+          }
+        }
       }
     },
     "elasticsearch": {
@@ -365,9 +377,9 @@
       "dev": true
     },
     "extend": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
-      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
       "dev": true
     },
     "extsprintf": {
@@ -731,16 +743,6 @@
         "wrappy": "1"
       }
     },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
     "parse-passwd": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/parse-passwd/-/parse-passwd-1.0.0.tgz",