diff --git a/package.json b/package.json
index bd3217abe..167b049e4 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "@hmcts/prd-client": "^0.0.8",
     "@hmcts/properties-volume": "^0.0.13",
     "add": "^2.0.6",
-    "ajv": "^4.10.0",
+    "ajv": "^6.0.0",
     "applicationinsights": "^2.5.0",
     "audit": "^0.0.6",
     "body-parser": "^1.14.1",
diff --git a/yarn.lock b/yarn.lock
index 5bd059934..763c59948 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1190,16 +1190,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ajv@npm:^4.10.0":
-  version: 4.11.8
-  resolution: "ajv@npm:4.11.8"
-  dependencies:
-    co: ^4.6.0
-    json-stable-stringify: ^1.0.1
-  checksum: 1a4fb38ebccc2ff3ab507d5507b133705d056f9db28cb00a59f0753a5f11e809d959b732edcd52c02fed628638ffb9486ee6bd13bf027400b5c9acf9c33e25f2
-  languageName: node
-  linkType: hard
-
 "ajv@npm:^5.2.3, ajv@npm:^5.3.0":
   version: 5.5.2
   resolution: "ajv@npm:5.5.2"
@@ -1212,7 +1202,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ajv@npm:^6.1.0, ajv@npm:^6.10.0, ajv@npm:^6.10.2, ajv@npm:^6.12.3, ajv@npm:^6.12.5":
+"ajv@npm:^6.0.0, ajv@npm:^6.1.0, ajv@npm:^6.10.0, ajv@npm:^6.10.2, ajv@npm:^6.12.3, ajv@npm:^6.12.5":
   version: 6.12.6
   resolution: "ajv@npm:6.12.6"
   dependencies:
@@ -5044,7 +5034,7 @@ __metadata:
     "@hmcts/prd-client": ^0.0.8
     "@hmcts/properties-volume": ^0.0.13
     add: ^2.0.6
-    ajv: ^4.10.0
+    ajv: ^6.0.0
     applicationinsights: ^2.5.0
     audit: ^0.0.6
     babel-core: 6.26.3
@@ -9589,15 +9579,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"json-stable-stringify@npm:^1.0.1":
-  version: 1.0.2
-  resolution: "json-stable-stringify@npm:1.0.2"
-  dependencies:
-    jsonify: ^0.0.1
-  checksum: ec10863493fb728481ed7576551382768a173d5b884758db530def00523b862083a3fd70fee24b39e2f47f5f502e22f9a1489dd66da3535b63bf6241dbfca800
-  languageName: node
-  linkType: hard
-
 "json-stringify-safe@npm:^5.0.1, json-stringify-safe@npm:~5.0.1":
   version: 5.0.1
   resolution: "json-stringify-safe@npm:5.0.1"
@@ -9671,13 +9652,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"jsonify@npm:^0.0.1":
-  version: 0.0.1
-  resolution: "jsonify@npm:0.0.1"
-  checksum: 027287e1c0294fce15f18c0ff990cfc2318e7f01fb76515f784d5cd0784abfec6fc5c2355c3a2f2cb0ad7f4aa2f5b74ebbfe4e80476c35b2d13cabdb572e1134
-  languageName: node
-  linkType: hard
-
 "jsonwebtoken@npm: >=9.0.0":
   version: 9.0.0
   resolution: "jsonwebtoken@npm:9.0.0"