diff --git a/package-lock.json b/package-lock.json
index 704d68e..4a8407b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -82,31 +82,45 @@
       }
     },
     "archiver": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/archiver/-/archiver-1.3.0.tgz",
-      "integrity": "sha1-TyGU1tj5nfP1MeaIHxTxXVX6ryI=",
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/archiver/-/archiver-4.0.2.tgz",
+      "integrity": "sha512-B9IZjlGwaxF33UN4oPbfBkyA4V1SxNLeIhR1qY8sRXSsbdUkEHrrOvwlYFPx+8uQeCe9M+FG6KgO+imDmQ79CQ==",
       "requires": {
-        "archiver-utils": "^1.3.0",
-        "async": "^2.0.0",
+        "archiver-utils": "^2.1.0",
+        "async": "^3.2.0",
         "buffer-crc32": "^0.2.1",
-        "glob": "^7.0.0",
-        "lodash": "^4.8.0",
-        "readable-stream": "^2.0.0",
-        "tar-stream": "^1.5.0",
-        "walkdir": "^0.0.11",
-        "zip-stream": "^1.1.0"
+        "glob": "^7.1.6",
+        "readable-stream": "^3.6.0",
+        "tar-stream": "^2.1.2",
+        "zip-stream": "^3.0.1"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "archiver-utils": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-1.3.0.tgz",
-      "integrity": "sha1-5QtMCccL89aA4y/xt5lOn52JUXQ=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-2.1.0.tgz",
+      "integrity": "sha512-bEL/yUb/fNNiNTuUz979Z0Yg5L+LzLxGJz8x79lYmR54fmTIb6ob/hNQgkQnIUDWIFjZVQwl9Xs356I6BAMHfw==",
       "requires": {
-        "glob": "^7.0.0",
-        "graceful-fs": "^4.1.0",
+        "glob": "^7.1.4",
+        "graceful-fs": "^4.2.0",
         "lazystream": "^1.0.0",
-        "lodash": "^4.8.0",
-        "normalize-path": "^2.0.0",
+        "lodash.defaults": "^4.2.0",
+        "lodash.difference": "^4.5.0",
+        "lodash.flatten": "^4.4.0",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.union": "^4.6.0",
+        "normalize-path": "^3.0.0",
         "readable-stream": "^2.0.0"
       }
     },
@@ -189,12 +203,9 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
-      "requires": {
-        "lodash": "^4.17.14"
-      }
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.3.tgz",
+      "integrity": "sha512-spZRyzKL5l5BZQrr/6m/SqFdBN0q3OCI0f9rjfBzCMBIP4p75P620rR3gTmaksNOhmzgdxcaxdNfMy6anrbM0g=="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -297,12 +308,25 @@
       "dev": true
     },
     "bl": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.3.tgz",
-      "integrity": "sha512-pvcNpa0UU69UT341rO6AYy4FVAIkUHuZXRIWbq+zHnsVcRzDDjIAhGuuYoi0d//cwIwtt4pkpKycWEfjdV+vww==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.1.0.tgz",
+      "integrity": "sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==",
       "requires": {
-        "readable-stream": "^2.3.5",
-        "safe-buffer": "^5.1.1"
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "bluebird": {
@@ -385,30 +409,11 @@
         "ieee754": "^1.1.13"
       }
     },
-    "buffer-alloc": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/buffer-alloc/-/buffer-alloc-1.2.0.tgz",
-      "integrity": "sha512-CFsHQgjtW1UChdXgbyJGtnm+O/uLQeZdtbDo8mfUgYXCHSM1wgrVxXm6bSyrUuErEb+4sYVGCzASBRot7zyrow==",
-      "requires": {
-        "buffer-alloc-unsafe": "^1.1.0",
-        "buffer-fill": "^1.0.0"
-      }
-    },
-    "buffer-alloc-unsafe": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
-      "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg=="
-    },
     "buffer-crc32": {
       "version": "0.2.13",
       "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
       "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
     },
-    "buffer-fill": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
-      "integrity": "sha1-+PeLdniYiO858gXNY39o5wISKyw="
-    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -595,14 +600,14 @@
       "dev": true
     },
     "compress-commons": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-1.2.2.tgz",
-      "integrity": "sha1-UkqfEJA/OoEzibAiXSfEi7dRiQ8=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-3.0.0.tgz",
+      "integrity": "sha512-FyDqr8TKX5/X0qo+aVfaZ+PVmNJHJeckFBlq8jZGSJOgnynhfifoyl24qaqdUdDIBe0EVTHByN6NAkqYvE/2Xg==",
       "requires": {
-        "buffer-crc32": "^0.2.1",
-        "crc32-stream": "^2.0.0",
-        "normalize-path": "^2.0.0",
-        "readable-stream": "^2.0.0"
+        "buffer-crc32": "^0.2.13",
+        "crc32-stream": "^3.0.1",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^2.3.7"
       }
     },
     "concat-map": {
@@ -670,12 +675,24 @@
       }
     },
     "crc32-stream": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-2.0.0.tgz",
-      "integrity": "sha1-483TtN8xaN10494/u8t7KX/pCPQ=",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-3.0.1.tgz",
+      "integrity": "sha512-mctvpXlbzsvK+6z8kJwSJ5crm7yBwrQMTybJzMw1O4lLGJqjlDCXY2Zw7KheiA6XBEcBmfLx1D88mjRGVJtY9w==",
       "requires": {
         "crc": "^3.4.4",
-        "readable-stream": "^2.0.0"
+        "readable-stream": "^3.4.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "css-select": {
@@ -1334,9 +1351,9 @@
       }
     },
     "glob": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
-      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.0.tgz",
+      "integrity": "sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==",
       "requires": {
         "fs.realpath": "^1.0.0",
         "inflight": "^1.0.4",
@@ -2219,9 +2236,9 @@
       "dev": true
     },
     "lazystream": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.0.tgz",
-      "integrity": "sha1-9plf4PggOS9hOWvolGJAe7dxaOQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.1.tgz",
+      "integrity": "sha512-b94GiNHQNy6JNTrt5w6zNyffMrNkXZb3KTkCZJb2V1xaEGCk093vkZ2jk3tpaeP33/OiXC+WvK9AxUebnf5nbw==",
       "requires": {
         "readable-stream": "^2.0.5"
       }
@@ -2316,6 +2333,11 @@
       "resolved": "https://registry.npmjs.org/lodash.defaults/-/lodash.defaults-4.2.0.tgz",
       "integrity": "sha1-0JF4cW/+pN3p5ft7N/bwgCJ0WAw="
     },
+    "lodash.difference": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.difference/-/lodash.difference-4.5.0.tgz",
+      "integrity": "sha1-nMtOUF1Ia5FlE0V3KIWi3yf9AXw="
+    },
     "lodash.escape": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/lodash.escape/-/lodash.escape-3.2.0.tgz",
@@ -2352,6 +2374,11 @@
       "integrity": "sha1-eeTriMNqgSKvhvhEqpvNhRtfu1U=",
       "dev": true
     },
+    "lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs="
+    },
     "lodash.keys": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-3.1.2.tgz",
@@ -2426,6 +2453,11 @@
         "lodash.escape": "^3.0.0"
       }
     },
+    "lodash.union": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/lodash.union/-/lodash.union-4.6.0.tgz",
+      "integrity": "sha1-SLtQiECfFvGCFmZkHETdGqrjzYg="
+    },
     "longest": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
@@ -2611,12 +2643,9 @@
       "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
     },
     "normalize-path": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
-      "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
-      "requires": {
-        "remove-trailing-separator": "^1.0.1"
-      }
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA=="
     },
     "normalize-url": {
       "version": "4.5.1",
@@ -2966,7 +2995,8 @@
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
-      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8="
+      "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8=",
+      "dev": true
     },
     "repeat-element": {
       "version": "1.1.3",
@@ -3431,17 +3461,27 @@
       "dev": true
     },
     "tar-stream": {
-      "version": "1.6.2",
-      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.6.2.tgz",
-      "integrity": "sha512-rzS0heiNf8Xn7/mpdSVVSMAWAoy9bfb1WOTYC78Z0UQKeKa/CWS8FOq0lKGNa8DWKAn9gxjCvMLYc5PGXYlK2A==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.2.0.tgz",
+      "integrity": "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ==",
       "requires": {
-        "bl": "^1.0.0",
-        "buffer-alloc": "^1.2.0",
-        "end-of-stream": "^1.0.0",
+        "bl": "^4.0.3",
+        "end-of-stream": "^1.4.1",
         "fs-constants": "^1.0.0",
-        "readable-stream": "^2.3.0",
-        "to-buffer": "^1.1.1",
-        "xtend": "^4.0.0"
+        "inherits": "^2.0.3",
+        "readable-stream": "^3.1.1"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     },
     "through": {
@@ -3475,11 +3515,6 @@
       "integrity": "sha1-dkpaEa9QVhkhsTPztE5hhofg9cM=",
       "dev": true
     },
-    "to-buffer": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/to-buffer/-/to-buffer-1.1.1.tgz",
-      "integrity": "sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg=="
-    },
     "to-object-path": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/to-object-path/-/to-object-path-0.3.0.tgz",
@@ -3839,11 +3874,6 @@
         "source-map": "^0.5.1"
       }
     },
-    "walkdir": {
-      "version": "0.0.11",
-      "resolved": "https://registry.npmjs.org/walkdir/-/walkdir-0.0.11.tgz",
-      "integrity": "sha1-oW0CXrkxvQO1LzCMrtD0D86+lTI="
-    },
     "website-scraper": {
       "version": "github:website-scraper/node-website-scraper#f66947cc05cb4736208fa210141af46760db6694",
       "from": "github:website-scraper/node-website-scraper#4.x",
@@ -3906,7 +3936,8 @@
     "xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
-      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "dev": true
     },
     "yargs": {
       "version": "3.10.0",
@@ -3921,14 +3952,25 @@
       }
     },
     "zip-stream": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-1.2.0.tgz",
-      "integrity": "sha1-qLxF9MG0lpnGuQGYuqyqzbzUugQ=",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-3.0.1.tgz",
+      "integrity": "sha512-r+JdDipt93ttDjsOVPU5zaq5bAyY+3H19bDrThkvuVxC0xMQzU1PJcS6D+KrP3u96gH9XLomcHPb+2skoDjulQ==",
       "requires": {
-        "archiver-utils": "^1.3.0",
-        "compress-commons": "^1.2.0",
-        "lodash": "^4.8.0",
-        "readable-stream": "^2.0.0"
+        "archiver-utils": "^2.1.0",
+        "compress-commons": "^3.0.0",
+        "readable-stream": "^3.6.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
       }
     }
   }
diff --git a/package.json b/package.json
index c45f924..cccfcdd 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "license": "MIT",
   "dependencies": {
     "app-controller": "^0.5.1",
-    "archiver": "^1.2.0",
+    "archiver": "^4.0.2",
     "bluebird": "^3.4.6",
     "body-parser": "^1.12.0",
     "ejs": "^3.1.6",