diff --git a/package-lock.json b/package-lock.json
index 27c5523..a3c5157 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,12 +14,12 @@
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@@ -75,9 +75,9 @@
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@@ -126,9 +126,9 @@
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@@ -137,18 +137,18 @@
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+      "resolved": "https://registry.npmjs.org/@peculiar/json-schema/-/json-schema-1.1.5.tgz",
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@@ -618,9 +618,9 @@
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@@ -987,54 +987,37 @@
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-        "yargs": "11.1.0",
-        "yargs-parser": "^9.0.2"
+        "yargs": "^12.0.5",
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@@ -1059,9 +1042,12 @@
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@@ -1083,49 +1069,29 @@
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@@ -1133,6 +1099,12 @@
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@@ -1161,18 +1133,13 @@
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@@ -1186,6 +1153,14 @@
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@@ -1200,12 +1175,12 @@
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@@ -1214,11 +1189,13 @@
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@@ -1263,9 +1240,12 @@
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@@ -1281,28 +1261,25 @@
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@@ -1311,6 +1288,14 @@
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@@ -1472,19 +1446,18 @@
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@@ -1500,25 +1473,22 @@
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           "dev": true,
           "requires": {
-            "md5-o-matic": "^0.1.1"
+            "p-defer": "^1.0.0"
           }
         },
-        "md5-o-matic": {
-          "version": "0.1.1",
-          "bundled": true,
-          "dev": true
-        },
         "mem": {
-          "version": "1.1.0",
+          "version": "4.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "mimic-fn": "^1.0.0"
+            "map-age-cleaner": "^0.1.1",
+            "mimic-fn": "^1.0.0",
+            "p-is-promise": "^1.1.0"
           }
         },
         "merge-source-map": {
@@ -1570,7 +1540,12 @@
           }
         },
         "ms": {
-          "version": "2.0.0",
+          "version": "2.1.1",
+          "bundled": true,
+          "dev": true
+        },
+        "nice-try": {
+          "version": "1.0.5",
           "bundled": true,
           "dev": true
         },
@@ -1621,22 +1596,32 @@
           "dev": true
         },
         "os-locale": {
-          "version": "2.1.0",
+          "version": "3.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "execa": "^0.7.0",
-            "lcid": "^1.0.0",
-            "mem": "^1.1.0"
+            "execa": "^1.0.0",
+            "lcid": "^2.0.0",
+            "mem": "^4.0.0"
           }
         },
+        "p-defer": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
         "p-finally": {
           "version": "1.0.0",
           "bundled": true,
           "dev": true
         },
+        "p-is-promise": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true
+        },
         "p-limit": {
-          "version": "2.0.0",
+          "version": "2.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -1657,13 +1642,13 @@
           "dev": true
         },
         "package-hash": {
-          "version": "2.0.0",
+          "version": "3.0.0",
           "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "^4.1.11",
+            "graceful-fs": "^4.1.15",
+            "hasha": "^3.0.0",
             "lodash.flattendeep": "^4.4.0",
-            "md5-hex": "^2.0.0",
             "release-zalgo": "^1.0.0"
           }
         },
@@ -1717,6 +1702,15 @@
           "bundled": true,
           "dev": true
         },
+        "pump": {
+          "version": "3.0.0",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
+          }
+        },
         "read-pkg": {
           "version": "3.0.0",
           "bundled": true,
@@ -1744,12 +1738,6 @@
             "es6-error": "^4.0.1"
           }
         },
-        "repeat-string": {
-          "version": "1.6.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
         "require-directory": {
           "version": "2.1.1",
           "bundled": true,
@@ -1765,21 +1753,12 @@
           "bundled": true,
           "dev": true
         },
-        "right-align": {
-          "version": "0.1.3",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "align-text": "^0.1.1"
-          }
-        },
         "rimraf": {
-          "version": "2.6.2",
+          "version": "2.6.3",
           "bundled": true,
           "dev": true,
           "requires": {
-            "glob": "^7.0.5"
+            "glob": "^7.1.3"
           }
         },
         "safe-buffer": {
@@ -1788,7 +1767,7 @@
           "dev": true
         },
         "semver": {
-          "version": "5.5.0",
+          "version": "5.6.0",
           "bundled": true,
           "dev": true
         },
@@ -1815,12 +1794,6 @@
           "bundled": true,
           "dev": true
         },
-        "source-map": {
-          "version": "0.5.7",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
         "spawn-wrap": {
           "version": "1.4.2",
           "bundled": true,
@@ -1835,7 +1808,7 @@
           }
         },
         "spdx-correct": {
-          "version": "3.0.0",
+          "version": "3.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -1844,7 +1817,7 @@
           }
         },
         "spdx-exceptions": {
-          "version": "2.1.0",
+          "version": "2.2.0",
           "bundled": true,
           "dev": true
         },
@@ -1858,7 +1831,7 @@
           }
         },
         "spdx-license-ids": {
-          "version": "3.0.0",
+          "version": "3.0.3",
           "bundled": true,
           "dev": true
         },
@@ -1889,16 +1862,8 @@
           "bundled": true,
           "dev": true
         },
-        "supports-color": {
-          "version": "5.4.0",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "has-flag": "^3.0.0"
-          }
-        },
         "test-exclude": {
-          "version": "5.0.0",
+          "version": "5.1.0",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -1909,43 +1874,30 @@
           }
         },
         "uglify-js": {
-          "version": "2.8.29",
+          "version": "3.4.9",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "source-map": "~0.5.1",
-            "uglify-to-browserify": "~1.0.0",
-            "yargs": "~3.10.0"
+            "commander": "~2.17.1",
+            "source-map": "~0.6.1"
           },
           "dependencies": {
-            "yargs": {
-              "version": "3.10.0",
+            "source-map": {
+              "version": "0.6.1",
               "bundled": true,
               "dev": true,
-              "optional": true,
-              "requires": {
-                "camelcase": "^1.0.2",
-                "cliui": "^2.1.0",
-                "decamelize": "^1.0.0",
-                "window-size": "0.1.0"
-              }
+              "optional": true
             }
           }
         },
-        "uglify-to-browserify": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
         "uuid": {
           "version": "3.3.2",
           "bundled": true,
           "dev": true
         },
         "validate-npm-package-license": {
-          "version": "3.0.3",
+          "version": "3.0.4",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -1966,12 +1918,6 @@
           "bundled": true,
           "dev": true
         },
-        "window-size": {
-          "version": "0.1.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
         "wordwrap": {
           "version": "0.0.3",
           "bundled": true,
@@ -2025,7 +1971,7 @@
           "dev": true
         },
         "write-file-atomic": {
-          "version": "2.3.0",
+          "version": "2.4.2",
           "bundled": true,
           "dev": true,
           "requires": {
@@ -2035,7 +1981,7 @@
           }
         },
         "y18n": {
-          "version": "3.2.1",
+          "version": "4.0.0",
           "bundled": true,
           "dev": true
         },
@@ -2045,87 +1991,31 @@
           "dev": true
         },
         "yargs": {
-          "version": "11.1.0",
+          "version": "12.0.5",
           "bundled": true,
           "dev": true,
           "requires": {
             "cliui": "^4.0.0",
-            "decamelize": "^1.1.1",
-            "find-up": "^2.1.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
             "get-caller-file": "^1.0.1",
-            "os-locale": "^2.0.0",
+            "os-locale": "^3.0.0",
             "require-directory": "^2.1.1",
             "require-main-filename": "^1.0.1",
             "set-blocking": "^2.0.0",
             "string-width": "^2.0.0",
             "which-module": "^2.0.0",
-            "y18n": "^3.2.1",
-            "yargs-parser": "^9.0.2"
-          },
-          "dependencies": {
-            "cliui": {
-              "version": "4.1.0",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "string-width": "^2.1.1",
-                "strip-ansi": "^4.0.0",
-                "wrap-ansi": "^2.0.0"
-              }
-            },
-            "find-up": {
-              "version": "2.1.0",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "locate-path": "^2.0.0"
-              }
-            },
-            "locate-path": {
-              "version": "2.0.0",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "p-locate": "^2.0.0",
-                "path-exists": "^3.0.0"
-              }
-            },
-            "p-limit": {
-              "version": "1.3.0",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "p-try": "^1.0.0"
-              }
-            },
-            "p-locate": {
-              "version": "2.0.0",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "p-limit": "^1.1.0"
-              }
-            },
-            "p-try": {
-              "version": "1.0.0",
-              "bundled": true,
-              "dev": true
-            }
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^11.1.1"
           }
         },
         "yargs-parser": {
-          "version": "9.0.2",
+          "version": "11.1.1",
           "bundled": true,
           "dev": true,
           "requires": {
-            "camelcase": "^4.1.0"
-          },
-          "dependencies": {
-            "camelcase": {
-              "version": "4.1.0",
-              "bundled": true,
-              "dev": true
-            }
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
           }
         }
       }
@@ -2484,9 +2374,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.2.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.2.4.tgz",
-      "integrity": "sha512-0RNDbSdEokBeEAkgNbxJ+BLwSManFy9TeXz8uW+48j/xhEXv1ePME60olyzw2XzUqUBNAYFeJadIqAgNqIACwg==",
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.3.3.tgz",
+      "integrity": "sha512-Y21Xqe54TBVp+VDSNbuDYdGw0BpoR/Q6wo/+35M8PAU0vipahnyduJWirxxdxjsAkS7hue53x2zp8gz7F05u0A==",
       "dev": true
     },
     "uri-js": {
@@ -2516,9 +2406,9 @@
       }
     },
     "webcrypto-core": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/webcrypto-core/-/webcrypto-core-1.0.1.tgz",
-      "integrity": "sha512-9+BE7tCP/rtTfPsh5US99gB4Al0pAGxNwReJ95JujApF4qU63Jx8bRsCEpFX7B+2gTxMyrSIWQJctlAETN1JJg==",
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/webcrypto-core/-/webcrypto-core-1.0.4.tgz",
+      "integrity": "sha512-zfXxrRIfT7NmuBwDZ1WDM98B6AarKnuGzzbFO1W94WAaS/qlt1uH+H177Kkpj89Wc1IZYFxMFyHe428DdVt4vA==",
       "requires": {
         "pvtsutils": "^1.0.3",
         "tslib": "^1.9.3"
diff --git a/package.json b/package.json
index e67431d..6831a0c 100644
--- a/package.json
+++ b/package.json
@@ -40,23 +40,23 @@
   "homepage": "https://github.com/PeculiarVentures/webcrypto#readme",
   "banner": "// Copyright (c) 2019, Peculiar Ventures, All rights reserved.",
   "devDependencies": {
-    "@types/mocha": "^5.2.5",
-    "@types/node": "^10.12.10",
+    "@types/mocha": "^5.2.6",
+    "@types/node": "^10.12.26",
     "coveralls": "^3.0.2",
     "mocha": "^5.2.0",
-    "nyc": "^13.1.0",
+    "nyc": "^13.2.0",
     "rollup": "^1.1.2",
     "rollup-plugin-typescript": "^1.0.0",
     "ts-node": "^7.0.1",
-    "typescript": "^3.1.6"
+    "typescript": "^3.3.3"
   },
   "dependencies": {
-    "@peculiar/asn1-schema": "^1.0.1",
-    "@peculiar/json-schema": "^1.1.4",
+    "@peculiar/asn1-schema": "^1.0.2",
+    "@peculiar/json-schema": "^1.1.5",
     "asn1js": "^2.0.21",
     "pvtsutils": "^1.0.3",
     "tslib": "^1.9.3",
-    "webcrypto-core": "^1.0.1"
+    "webcrypto-core": "^1.0.4"
   },
   "nyc": {
     "extension": [