diff --git a/package.json b/package.json
index 668260f..1c4b208 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "ethereumjs-util": "^7.0.2",
     "ethers": "^4",
     "express": "^4.17.1",
-    "json-schema": "^0.2.5",
+    "json-schema": "^0.4.0",
     "level": "^6.0.0",
     "morgan": "^1.9.1",
     "node-fetch": "^2.0.0"
diff --git a/yarn.lock b/yarn.lock
index 7d4a961..4b6b342 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3221,10 +3221,10 @@ json-schema@0.2.3:
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
   integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
 
-json-schema@^0.2.5:
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.5.tgz#97997f50972dd0500214e208c407efa4b5d7063b"
-  integrity sha512-gWJOWYFrhQ8j7pVm0EM8Slr+EPVq1Phf6lvzvD/WCeqkrx/f2xBI0xOsRRS9xCn3I4vKtP519dvs3TP09r24wQ==
+json-schema@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.4.0.tgz#f7de4cf6efab838ebaeb3236474cbba5a1930ab5"
+  integrity sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA==
 
 json-stable-stringify-without-jsonify@^1.0.1:
   version "1.0.1"