diff --git a/package-lock.json b/package-lock.json
index f712d6996..de0852c33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2663,18 +2663,18 @@
       }
     },
     "node_modules/@middy/validator": {
-      "version": "5.4.2",
-      "resolved": "https://registry.npmjs.org/@middy/validator/-/validator-5.4.2.tgz",
-      "integrity": "sha512-7R1uqxtt5ixxk0kCiSQ+hJhmSnXQK/m2BrEuR7sLbEuuSGDnYBxZ/6gR9ECBYdJlGfORKGy7bzU96y72l5y4oQ==",
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/@middy/validator/-/validator-5.4.3.tgz",
+      "integrity": "sha512-+m9ZcrBSFI7HNOjoThcwpENRcClyv1GHMlS8cfPf1btVij9dOlNUq1iRut404B+U3De9o2qa1+tkRI1JnYVWXw==",
       "dependencies": {
         "@middy/util": "5.4.2",
-        "ajv": "8.14.0",
+        "ajv": "8.16.0",
         "ajv-errors": "3.0.0",
         "ajv-formats": "3.0.1",
         "ajv-formats-draft2019": "1.6.1",
         "ajv-ftl-i18n": "0.1.1",
         "ajv-keywords": "5.1.0",
-        "fast-uri": "2.3.0"
+        "fast-uri": "3.0.1"
       },
       "engines": {
         "node": ">=18"
@@ -2685,9 +2685,9 @@
       }
     },
     "node_modules/@middy/validator/node_modules/ajv": {
-      "version": "8.14.0",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.14.0.tgz",
-      "integrity": "sha512-oYs1UUtO97ZO2lJ4bwnWeQW8/zvOIQLGKcvPTsWmvc2SYgBb+upuNS5NxoLaMU4h8Ju3Nbj6Cq8mD2LQoqVKFA==",
+      "version": "8.16.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.16.0.tgz",
+      "integrity": "sha512-F0twR8U1ZU67JIEtekUcLkXkoO5mMMmgGD8sK/xUFzJ805jxHQl92hImFAqqXMyMYjSPOyUPAwHYhB72g5sTXw==",
       "dependencies": {
         "fast-deep-equal": "^3.1.3",
         "json-schema-traverse": "^1.0.0",
@@ -6732,9 +6732,9 @@
       "dev": true
     },
     "node_modules/fast-uri": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-2.3.0.tgz",
-      "integrity": "sha512-eel5UKGn369gGEWOqBShmFJWfq/xSJvsgDzgLYC845GneayWvXBf0lJCBn5qTABfewy1ZDPoaR5OZCP+kssfuw=="
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.0.1.tgz",
+      "integrity": "sha512-MWipKbbYiYI0UC7cl8m/i/IWTqfC8YXsqjzybjddLsFjStroQzsHXkc73JutMvBiXmOvapk+axIl79ig5t55Bw=="
     },
     "node_modules/fast-xml-parser": {
       "version": "4.2.5",
@@ -15421,7 +15421,7 @@
         "@middy/core": "^5.4.2",
         "@middy/http-header-normalizer": "^5.4.2",
         "@middy/input-output-logger": "^5.4.2",
-        "@middy/validator": "^5.4.2",
+        "@middy/validator": "^5.4.3",
         "json-schema-to-ts": "^3.1.0",
         "pratica": "^2.3.0",
         "ts-md5": "^1.3.1",
@@ -15445,7 +15445,7 @@
         "@aws-sdk/util-dynamodb": "^3.609.0",
         "@middy/core": "^5.4.2",
         "@middy/input-output-logger": "^5.4.2",
-        "@middy/validator": "^5.4.2",
+        "@middy/validator": "^5.4.3",
         "@nhs/fhir-middy-error-handler": "^2.0.9",
         "json-schema-to-ts": "^3.1.0"
       }
diff --git a/packages/cpsuLambda/package.json b/packages/cpsuLambda/package.json
index 0516df8c0..7c62f4dc6 100644
--- a/packages/cpsuLambda/package.json
+++ b/packages/cpsuLambda/package.json
@@ -21,7 +21,7 @@
     "@middy/core": "^5.4.2",
     "@middy/http-header-normalizer": "^5.4.2",
     "@middy/input-output-logger": "^5.4.2",
-    "@middy/validator": "^5.4.2",
+    "@middy/validator": "^5.4.3",
     "json-schema-to-ts": "^3.1.0",
     "pratica": "^2.3.0",
     "ts-md5": "^1.3.1",
diff --git a/packages/gsul/package.json b/packages/gsul/package.json
index c168ac70b..7daa21419 100644
--- a/packages/gsul/package.json
+++ b/packages/gsul/package.json
@@ -21,7 +21,7 @@
     "@aws-sdk/util-dynamodb": "^3.609.0",
     "@middy/core": "^5.4.2",
     "@middy/input-output-logger": "^5.4.2",
-    "@middy/validator": "^5.4.2",
+    "@middy/validator": "^5.4.3",
     "@nhs/fhir-middy-error-handler": "^2.0.9",
     "json-schema-to-ts": "^3.1.0"
   }