diff --git a/package-lock.json b/package-lock.json
index 9a4942e..52034c8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -833,15 +833,29 @@
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-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.3.0.tgz",
-      "integrity": "sha1-RBT/dKUIecII7l/cgm4ywwNUnto=",
+      "version": "6.12.3",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.3.tgz",
+      "integrity": "sha512-4K0cK3L1hsqk9xIb2z9vs/XU+PGJZ9PNpJRDS9YLzmNdX6jmVPfamLvTJr0aDAusnHyCHO6MjzlkAsgtqp9teA==",
       "dev": true,
       "requires": {
-        "co": "^4.6.0",
-        "fast-deep-equal": "^1.0.0",
+        "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.3.0"
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+          "dev": true
+        },
+        "json-schema-traverse": {
+          "version": "0.4.1",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
+          "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+          "dev": true
+        }
       }
     },
     "ajv-keywords": {
@@ -3176,6 +3190,7 @@
           "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
           "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -4094,7 +4109,8 @@
           "version": "1.0.1",
           "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
           "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -5999,6 +6015,23 @@
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       "dev": true
     },
+    "uri-js": {
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+      "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
+      "dev": true,
+      "requires": {
+        "punycode": "^2.1.0"
+      },
+      "dependencies": {
+        "punycode": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
+          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
+          "dev": true
+        }
+      }
+    },
     "urlgrey": {
       "version": "0.4.4",
       "resolved": "https://registry.npmjs.org/urlgrey/-/urlgrey-0.4.4.tgz",
diff --git a/package.json b/package.json
index a7984f9..51648c5 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "@babel/core": "^7.0.0-beta.31",
     "@babel/preset-env": "^7.0.0-beta.31",
     "@babel/register": "^7.0.0-beta.31",
-    "ajv": "^5.3.0",
+    "ajv": "^6.12.3",
     "babel-register": "^6.26.0",
     "codecov": "^3.0.0",
     "eslint": "^4.10.0",