diff --git a/package-lock.json b/package-lock.json
index 0a2e204..ae21bd7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2653,6 +2653,12 @@
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       "dev": true
     },
+    "date-format": {
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+      "resolved": "https://registry.npmjs.org/date-format/-/date-format-4.0.3.tgz",
+      "integrity": "sha512-7P3FyqDcfeznLZp2b+OMitV9Sz2lUnsT87WaTat9nVwqsBkTzPG3lPLNwW3en6F4pHUiWzr6vb8CLhjdK9bcxQ==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
@@ -3527,6 +3533,12 @@
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       }
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+    "flatted": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.2.4.tgz",
+      "integrity": "sha512-8/sOawo8tJ4QOBX8YlQBMxL8+RLZfxMQOif9o0KUKTNTjMYElWPE0r/m5VNFxTRd0NSw8qSy8dajrwX4RYI1Hw==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/flush-write-stream/-/flush-write-stream-1.1.1.tgz",
@@ -3644,6 +3656,17 @@
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+    "fs-extra": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.0.0.tgz",
+      "integrity": "sha512-C5owb14u9eJwizKGdchcDUQeFtlSHHthBk8pbX9Vc1PFZrLombudjDnNns88aYslCyF6IY5SUw3Roz6xShcEIQ==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/fs-write-stream-atomic/-/fs-write-stream-atomic-1.0.10.tgz",
@@ -4503,6 +4526,16 @@
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       }
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+    "jsonfile": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+      "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.6",
+        "universalify": "^2.0.0"
+      }
+    },
     "jsonify": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
@@ -4594,13 +4627,27 @@
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     "log4js": {
-      "version": "0.6.38",
-      "resolved": "https://registry.npmjs.org/log4js/-/log4js-0.6.38.tgz",
-      "integrity": "sha1-LElBFmldb7JUgJQ9P8hy5mKlIv0=",
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/log4js/-/log4js-6.4.0.tgz",
+      "integrity": "sha512-ysc/XUecZJuN8NoKOssk3V0cQ29xY4fra6fnigZa5VwxFsCsvdqsdnEuAxNN89LlHpbE4KUD3zGcn+kFqonSVQ==",
       "dev": true,
       "requires": {
-        "readable-stream": "~1.0.2",
-        "semver": "~4.3.3"
+        "date-format": "^4.0.3",
+        "debug": "^4.3.3",
+        "flatted": "^3.2.4",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.0.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.3.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
+          "dev": true,
+          "requires": {
+            "ms": "2.1.2"
+          }
+        }
       }
     },
     "loglevel": {
@@ -6010,6 +6057,12 @@
       "integrity": "sha1-G0KmJmoh8HQh0bC1S33BZ7AcATs=",
       "dev": true
     },
+    "rfdc": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz",
+      "integrity": "sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==",
+      "dev": true
+    },
     "rimraf": {
       "version": "2.7.1",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
@@ -6811,6 +6864,17 @@
         }
       }
     },
+    "streamroller": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-3.0.2.tgz",
+      "integrity": "sha512-ur6y5S5dopOaRXBuRIZ1u6GC5bcEXHRZKgfBjfCglMhmIf+roVCECjvkEYzNQOXIN2/JPnkMPW/8B3CZoKaEPA==",
+      "dev": true,
+      "requires": {
+        "date-format": "^4.0.3",
+        "debug": "^4.1.1",
+        "fs-extra": "^10.0.0"
+      }
+    },
     "string-width": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
@@ -7142,6 +7206,12 @@
         "imurmurhash": "^0.1.4"
       }
     },
+    "universalify": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
+      "integrity": "sha512-hAZsKq7Yy11Zu1DE0OzWjw7nnLZmJZYTDZZyEFHZdUhV8FkH5MCfoU1XMaxXovpyW5nq5scPqq0ZDP9Zyl04oQ==",
+      "dev": true
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
diff --git a/package.json b/package.json
index 20ead46..282fd93 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "async": "^0.2.9",
     "browserify": "13.1.1",
     "commander": "^2.2.0",
-    "log4js": "^0.6.22",
+    "log4js": "^6.4.0",
     "mkdirp": "^0.3.5",
     "semver": "^4.2.0",
     "webpack": "^4.46.0",