diff --git a/package-lock.json b/package-lock.json
index 13e7228..27cc966 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -725,11 +725,11 @@
       "optional": true
     },
     "config": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/config/-/config-2.0.1.tgz",
-      "integrity": "sha512-aTaviJnC8ZjQYx8kQf4u6tWqIxWolyQQ3LqXgnCLAsIb78JrUshHG0YuzIarzTaVVe1Pazms3TXImfYra8UsyQ==",
+      "version": "3.3.8",
+      "resolved": "https://registry.npmjs.org/config/-/config-3.3.8.tgz",
+      "integrity": "sha512-rFzF6VESOdp7wAXFlB9IOZI4ouL05g3A03v2eRcTHj2JBQaTNJ40zhAUl5wRbWHqLZ+uqp/7OE0BWWtAVgrong==",
       "requires": {
-        "json5": "^1.0.1"
+        "json5": "^2.2.1"
       }
     },
     "constantinople": {
@@ -1193,19 +1193,9 @@
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
     },
     "json5": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
-      "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
-      "requires": {
-        "minimist": "^1.2.0"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
-        }
-      }
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
+      "integrity": "sha512-XmOWe7eyHYH14cLdVPoyg+GOH3rYX++KpzrylJwSW98t3Nk+U8XOl8FWKOgwtzdb8lXGf6zYwDUzeHMWfxasyg=="
     },
     "jsonwebtoken": {
       "version": "8.3.0",
@@ -1476,6 +1466,7 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "optional": true,
       "requires": {
         "wrappy": "1"
       }
@@ -1920,7 +1911,8 @@
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "optional": true
     },
     "yargs": {
       "version": "3.10.0",
diff --git a/package.json b/package.json
index a5e64de..fef0e76 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "dependencies": {
     "bcrypt": "^3.0.4",
     "bitcoin-core": "^2.0.0",
-    "config": "^2.0.1",
+    "config": "^3.3.8",
     "cookie-parser": "~1.4.3",
     "cors": "^2.8.4",
     "debug": "~2.6.9",