diff --git a/samples/react-display-hierarchy/package-lock.json b/samples/react-display-hierarchy/package-lock.json
index 8af289177..2e9a7480c 100644
--- a/samples/react-display-hierarchy/package-lock.json
+++ b/samples/react-display-hierarchy/package-lock.json
@@ -3692,29 +3692,15 @@
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-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.2.5.tgz",
-      "integrity": "sha1-tjcjTT4mdetfefxlIkKoU6SMtJ8=",
+      "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",
-        "json-schema-traverse": "^0.3.0",
-        "json-stable-stringify": "^1.0.1"
-      },
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-          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
-          "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
-          "dev": true
-        },
-        "json-schema-traverse": {
-          "version": "0.3.1",
-          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
-          "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
-          "dev": true
-        }
+        "fast-deep-equal": "^3.1.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
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diff --git a/samples/react-display-hierarchy/package.json b/samples/react-display-hierarchy/package.json
index 8807abcd7..926db7262 100644
--- a/samples/react-display-hierarchy/package.json
+++ b/samples/react-display-hierarchy/package.json
@@ -34,7 +34,7 @@
     "@microsoft/sp-webpart-workbench": "1.11.0",
     "@types/chai": "3.4.34",
     "@types/mocha": "2.2.38",
-    "ajv": "~5.2.2",
+    "ajv": "~6.12.3",
     "gulp": "~3.9.1"
   },
   "main": "lib/index.js"