diff --git a/package-lock.json b/package-lock.json
index aee37e9..15b3b21 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -106,9 +106,9 @@
       }
     },
     "@types/node": {
-      "version": "8.0.31",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.0.31.tgz",
-      "integrity": "sha512-R+LdMJHJQwRd/Ca0Nr5KnwbSWHxTD3DWz4ivqoPeNH+YPcuirMWK+Ti9Mx32jOecmPhHOCd+6CefU5e1eVq2Ew==",
+      "version": "8.0.33",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.0.33.tgz",
+      "integrity": "sha512-vmCdO8Bm1ExT+FWfC9sd9r4jwqM7o97gGy2WBshkkXbf/2nLAJQUrZfIhw27yVOtLUev6kSZc4cav/46KbDd8A==",
       "dev": true
     },
     "JSONStream": {
@@ -1307,9 +1307,9 @@
       "dev": true
     },
     "fseh": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/fseh/-/fseh-2.5.0.tgz",
-      "integrity": "sha1-cTIW22aPYy6Mo2X+MZ6iLZyYegw="
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/fseh/-/fseh-2.6.0.tgz",
+      "integrity": "sha1-ozIB6tzcVkEtNHDSHdnAeN2jreQ="
     },
     "gauge": {
       "version": "2.7.4",
@@ -1545,12 +1545,6 @@
       "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=",
       "dev": true
     },
-    "growl": {
-      "version": "1.9.2",
-      "resolved": "https://registry.npmjs.org/growl/-/growl-1.9.2.tgz",
-      "integrity": "sha1-Dqd0NxXbjY3ixe3hd14bRayFwC8=",
-      "dev": true
-    },
     "handlebars": {
       "version": "4.0.10",
       "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.10.tgz",
@@ -1598,12 +1592,6 @@
         "ansi-regex": "2.1.1"
       }
     },
-    "has-flag": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
-      "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
-      "dev": true
-    },
     "has-unicode": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
@@ -1977,12 +1965,6 @@
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
       "dev": true
     },
-    "json3": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/json3/-/json3-3.3.2.tgz",
-      "integrity": "sha1-PAQ0dD35Pi9cQq7nsZvLSDV19OE=",
-      "dev": true
-    },
     "jsonfile": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz",
@@ -2110,12 +2092,6 @@
       "integrity": "sha1-jaDmqHbPNEwK2KVIghEd08XHyjY=",
       "dev": true
     },
-    "lodash._basecreate": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash._basecreate/-/lodash._basecreate-3.0.3.tgz",
-      "integrity": "sha1-G8ZhYU2qf8MRt9A78WgGoCE8+CE=",
-      "dev": true
-    },
     "lodash._bindcallback": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz",
@@ -2162,17 +2138,6 @@
         "lodash.keys": "3.1.2"
       }
     },
-    "lodash.create": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/lodash.create/-/lodash.create-3.1.1.tgz",
-      "integrity": "sha1-1/KEnw29p+BGgruM1yqwIkYd6+c=",
-      "dev": true,
-      "requires": {
-        "lodash._baseassign": "3.2.0",
-        "lodash._basecreate": "3.0.3",
-        "lodash._isiterateecall": "3.0.9"
-      }
-    },
     "lodash.get": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
@@ -2239,12 +2204,6 @@
       "integrity": "sha1-euTsJXMC/XkNVXyxDJcQDYV7AFY=",
       "dev": true
     },
-    "lolex": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/lolex/-/lolex-2.1.2.tgz",
-      "integrity": "sha1-JpS5U8nqTQE+W4v7qJHJkQJbJik=",
-      "dev": true
-    },
     "longest": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
@@ -2368,38 +2327,71 @@
       }
     },
     "mocha": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-3.5.3.tgz",
-      "integrity": "sha512-/6na001MJWEtYxHOV1WLfsmR4YIynkUEhBwzsb+fk2qmQ3iqsi258l/Q2MWHJMImAcNpZ8DEdYAK72NHoIQ9Eg==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-4.0.1.tgz",
+      "integrity": "sha512-evDmhkoA+cBNiQQQdSKZa2b9+W2mpLoj50367lhy+Klnx9OV8XlCIhigUnn1gaTFLQCa0kdNhEGDr0hCXOQFDw==",
       "dev": true,
       "requires": {
         "browser-stdout": "1.3.0",
-        "commander": "2.9.0",
-        "debug": "2.6.8",
-        "diff": "3.2.0",
+        "commander": "2.11.0",
+        "debug": "3.1.0",
+        "diff": "3.3.1",
         "escape-string-regexp": "1.0.5",
-        "glob": "7.1.1",
-        "growl": "1.9.2",
+        "glob": "7.1.2",
+        "growl": "1.10.3",
         "he": "1.1.1",
-        "json3": "3.3.2",
-        "lodash.create": "3.1.1",
         "mkdirp": "0.5.1",
-        "supports-color": "3.1.2"
+        "supports-color": "4.4.0"
       },
       "dependencies": {
-        "diff": {
-          "version": "3.2.0",
-          "resolved": "https://registry.npmjs.org/diff/-/diff-3.2.0.tgz",
-          "integrity": "sha1-yc45Okt8vQsFinJck98pkCeGj/k=",
+        "commander": {
+          "version": "2.11.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.11.0.tgz",
+          "integrity": "sha512-b0553uYA5YAEGgyYIGYROzKQ7X5RAqedkfjiZxwi0kL1g3bOaBNNZfYkzt/CL0umgD5wc9Jec2FbB98CjkMRvQ==",
+          "dev": true
+        },
+        "debug": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+          "dev": true,
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "glob": {
+          "version": "7.1.2",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
+          "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+          "dev": true,
+          "requires": {
+            "fs.realpath": "1.0.0",
+            "inflight": "1.0.6",
+            "inherits": "2.0.3",
+            "minimatch": "3.0.4",
+            "once": "1.4.0",
+            "path-is-absolute": "1.0.1"
+          }
+        },
+        "growl": {
+          "version": "1.10.3",
+          "resolved": "https://registry.npmjs.org/growl/-/growl-1.10.3.tgz",
+          "integrity": "sha512-hKlsbA5Vu3xsh1Cg3J7jSmX/WaW6A5oBeqzM88oNbCRQFz+zUaXm6yxS4RVytp1scBoJzSYl4YAEOQIt6O8V1Q==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-2.0.0.tgz",
+          "integrity": "sha1-6CB68cx7MNRGzHC3NLXovhj4jVE=",
           "dev": true
         },
         "supports-color": {
-          "version": "3.1.2",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.1.2.tgz",
-          "integrity": "sha1-cqJiiU2dQIuVbKBf83su2KbiotU=",
+          "version": "4.4.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.4.0.tgz",
+          "integrity": "sha512-rKC3+DyXWgK0ZLKwmRsrkyHVZAjNkfzeehuFWdGGcqGDTZFH73+RH6S/RDAAxl9GusSjZSUWYLmT9N5pzXFOXQ==",
           "dev": true,
           "requires": {
-            "has-flag": "1.0.0"
+            "has-flag": "2.0.0"
           }
         }
       }
@@ -2440,27 +2432,6 @@
       "integrity": "sha1-a+lPysqNd63gqWcNxGCRTJRHJEQ=",
       "dev": true
     },
-    "nise": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/nise/-/nise-1.1.0.tgz",
-      "integrity": "sha512-lIFidCxB0mJGyq1i33tLRNojtMoYX95EAI7WQEU+/ees0w6hvXZQHZ7WD130Tjeh5+YJAUVLfQ3k/s9EA8jj+w==",
-      "dev": true,
-      "requires": {
-        "formatio": "1.2.0",
-        "just-extend": "1.1.22",
-        "lolex": "1.6.0",
-        "path-to-regexp": "1.7.0",
-        "text-encoding": "0.6.4"
-      },
-      "dependencies": {
-        "lolex": {
-          "version": "1.6.0",
-          "resolved": "https://registry.npmjs.org/lolex/-/lolex-1.6.0.tgz",
-          "integrity": "sha1-OpoCg0UqR9dDnnJzG54H1zhuSfY=",
-          "dev": true
-        }
-      }
-    },
     "node-uuid": {
       "version": "1.4.8",
       "resolved": "https://registry.npmjs.org/node-uuid/-/node-uuid-1.4.8.tgz",
@@ -4962,21 +4933,50 @@
       "dev": true
     },
     "sinon": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.0.0.tgz",
-      "integrity": "sha1-pUpfAjeqHdIhXl6ByJtCtQxP22s=",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.0.1.tgz",
+      "integrity": "sha512-4qIY0pCWCvGCJpV/1JkFu9kbsNEZ9O34cG1oru/c7OCDtrEs50Gq/VjkA2ID5ZwLyoNx1i1ws118oh/p6fVeDg==",
       "dev": true,
       "requires": {
         "diff": "3.3.1",
         "formatio": "1.2.0",
         "lodash.get": "4.4.2",
-        "lolex": "2.1.2",
+        "lolex": "2.1.3",
         "native-promise-only": "0.8.1",
-        "nise": "1.1.0",
+        "nise": "1.1.1",
         "path-to-regexp": "1.7.0",
         "samsam": "1.2.1",
         "text-encoding": "0.6.4",
         "type-detect": "4.0.3"
+      },
+      "dependencies": {
+        "lolex": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/lolex/-/lolex-2.1.3.tgz",
+          "integrity": "sha512-BdHq78SeI+6PAUtl4atDuCt7L6E4fab3mSRtqxm4ywaXe4uP7jZ0TTcFNuU20syUjxZc2l7jFqKVMJ+AX0LnpQ==",
+          "dev": true
+        },
+        "nise": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/nise/-/nise-1.1.1.tgz",
+          "integrity": "sha512-f5DMJB0MqBaSuP2NAwPx7HyVKPdaozds0KsNe9XIP3npKWt/QUg73l5TTLRTSwfG/Y3AB0ktacuxX4QNcg6vVw==",
+          "dev": true,
+          "requires": {
+            "formatio": "1.2.0",
+            "just-extend": "1.1.22",
+            "lolex": "1.6.0",
+            "path-to-regexp": "1.7.0",
+            "text-encoding": "0.6.4"
+          },
+          "dependencies": {
+            "lolex": {
+              "version": "1.6.0",
+              "resolved": "https://registry.npmjs.org/lolex/-/lolex-1.6.0.tgz",
+              "integrity": "sha1-OpoCg0UqR9dDnnJzG54H1zhuSfY=",
+              "dev": true
+            }
+          }
+        }
       }
     },
     "sinon-chai": {
diff --git a/package.json b/package.json
index a9c145b..96a89a7 100644
--- a/package.json
+++ b/package.json
@@ -43,16 +43,16 @@
   },
   "homepage": "https://github.com/0xfede/fsehx#readme",
   "devDependencies": {
-    "@types/node": "8.0.31",
+    "@types/node": "8.0.33",
     "chai": "4.1.2",
     "commitizen": "2.9.6",
     "coveralls": "^3.0.0",
     "cz-conventional-changelog": "2.0.0",
     "husky": "^0.14.3",
-    "mocha": "3.5.3",
+    "mocha": "4.0.1",
     "nyc": "11.2.1",
     "semantic-release": "8.0.3",
-    "sinon": "^4.0.0",
+    "sinon": "^4.0.1",
     "sinon-chai": "^2.14.0",
     "typescript": "2.5.3"
   },
@@ -62,6 +62,6 @@
     }
   },
   "dependencies": {
-    "fseh": "^2.5.0"
+    "fseh": "^2.6.0"
   }
 }