diff --git a/package-lock.json b/package-lock.json
index 19f2c29..5bd3e23 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -78,14 +78,6 @@
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@@ -425,9 +417,9 @@
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@@ -975,9 +967,9 @@
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-      "resolved": "https://registry.npmjs.org/flatted/-/flatted-2.0.0.tgz",
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@@ -1387,29 +1379,29 @@
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-      "resolved": "https://registry.npmjs.org/log4js/-/log4js-4.1.0.tgz",
-      "integrity": "sha512-eDa+zZPeVEeK6QGJAePyXM6pg4P3n3TO5rX9iZMVY48JshsTyLJZLIL5HipI1kQ2qLsSyOpUqNND/C5H4WhhiA==",
-      "requires": {
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-        "debug": "^4.1.1",
-        "flatted": "^2.0.0",
-        "rfdc": "^1.1.2",
-        "streamroller": "^1.0.4"
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/log4js/-/log4js-6.4.0.tgz",
+      "integrity": "sha512-ysc/XUecZJuN8NoKOssk3V0cQ29xY4fra6fnigZa5VwxFsCsvdqsdnEuAxNN89LlHpbE4KUD3zGcn+kFqonSVQ==",
+      "requires": {
+        "date-format": "^4.0.3",
+        "debug": "^4.3.3",
+        "flatted": "^3.2.4",
+        "rfdc": "^1.3.0",
+        "streamroller": "^3.0.2"
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-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "version": "4.3.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
           "requires": {
-            "ms": "^2.1.1"
+            "ms": "2.1.2"
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-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
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@@ -1872,9 +1864,9 @@
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-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.1.2.tgz",
-      "integrity": "sha512-92ktAgvZhBzYTIK0Mja9uen5q5J3NRVMoDkJL2VMwq6SXjVCgqvQeVP2XAaUY6HT+XpQYeLSjb3UoitBryKmdA=="
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/rfdc/-/rfdc-1.3.0.tgz",
+      "integrity": "sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA=="
     },
     "ripemd160": {
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@@ -2095,39 +2087,56 @@
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-      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-1.0.4.tgz",
-      "integrity": "sha512-Wc2Gm5ygjSX8ZpW9J7Y9FwiSzTlKSvcl0FTTMd3rn7RoxDXpBW+xD9TY5sWL2n0UR61COB0LG1BQvN6nTUQbLQ==",
-      "requires": {
-        "async": "^2.6.1",
-        "date-format": "^2.0.0",
-        "debug": "^3.1.0",
-        "fs-extra": "^7.0.0",
-        "lodash": "^4.17.10"
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-3.0.2.tgz",
+      "integrity": "sha512-ur6y5S5dopOaRXBuRIZ1u6GC5bcEXHRZKgfBjfCglMhmIf+roVCECjvkEYzNQOXIN2/JPnkMPW/8B3CZoKaEPA==",
+      "requires": {
+        "date-format": "^4.0.3",
+        "debug": "^4.1.1",
+        "fs-extra": "^10.0.0"
       },
       "dependencies": {
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-          "version": "3.2.6",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
-          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
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+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
           "requires": {
-            "ms": "^2.1.1"
+            "ms": "2.1.2"
           }
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         "fs-extra": {
-          "version": "7.0.1",
-          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-7.0.1.tgz",
-          "integrity": "sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==",
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+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-10.0.0.tgz",
+          "integrity": "sha512-C5owb14u9eJwizKGdchcDUQeFtlSHHthBk8pbX9Vc1PFZrLombudjDnNns88aYslCyF6IY5SUw3Roz6xShcEIQ==",
           "requires": {
-            "graceful-fs": "^4.1.2",
-            "jsonfile": "^4.0.0",
-            "universalify": "^0.1.0"
+            "graceful-fs": "^4.2.0",
+            "jsonfile": "^6.0.1",
+            "universalify": "^2.0.0"
+          }
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+        "graceful-fs": {
+          "version": "4.2.9",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.9.tgz",
+          "integrity": "sha512-NtNxqUcXgpW2iMrfqSfR73Glt39K+BLwWsPs94yR63v45T0Wbej7eRmL5cWfwEgqXnmjQp3zaJTshdRW/qC2ZQ=="
+        },
+        "jsonfile": {
+          "version": "6.1.0",
+          "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.1.0.tgz",
+          "integrity": "sha512-5dgndWOriYSm5cnYaJNhalLNDKOqFwyDB/rr1E9ZsGciGvKPs8R2xYGCacuf3z6K1YKDz182fd+fY3cn3pMqXQ==",
+          "requires": {
+            "graceful-fs": "^4.1.6",
+            "universalify": "^2.0.0"
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         "ms": {
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-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
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+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
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+        },
+        "universalify": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
+          "integrity": "sha512-hAZsKq7Yy11Zu1DE0OzWjw7nnLZmJZYTDZZyEFHZdUhV8FkH5MCfoU1XMaxXovpyW5nq5scPqq0ZDP9Zyl04oQ=="
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diff --git a/package.json b/package.json
index f7e5e51..64b6431 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "log4js": "^4.1.0",
+    "log4js": "^6.4.0",
     "util": "^0.11.1",
     "web3": "^1.0.0-beta.52"
   }