diff --git a/package.json b/package.json
index 93b3af9d..b95c6f99 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "@sinclair/typebox": "0.34.49",
     "@tryghost/errors": "3.2.0",
     "@tryghost/referrer-parser": "0.1.16",
-    "@tryghost/validator": "2.1.0",
+    "@tryghost/validator": "3.1.0",
     "fastify": "5.8.5",
     "fastify-plugin": "5.1.0",
     "pino": "10.3.1",
diff --git a/src/schemas/format-registry.ts b/src/schemas/format-registry.ts
index 5365811c..563668d6 100644
--- a/src/schemas/format-registry.ts
+++ b/src/schemas/format-registry.ts
@@ -7,9 +7,9 @@ import validator from '@tryghost/validator';
  * format validators are available before any schema usage.
  */
 export function registerFormatValidators(): void {
-    // UUID format validator using @tryghost/validator
     FormatRegistry.Set('uuid', (value) => {
-        return validator.isUUID(value);
+        // We only require UUID-shaped values here; they do not need to be fully RFC compliant.
+        return validator.isUUID(value, 'loose');
     });
 
     // URI format validator using @tryghost/validator
@@ -23,4 +23,4 @@ export function registerFormatValidators(): void {
         const date = new Date(value);
         return !isNaN(date.getTime()) && date.toISOString() === value;
     });
-}
\ No newline at end of file
+}
diff --git a/src/types/tryghost-validator.d.ts b/src/types/tryghost-validator.d.ts
index e029c082..cc1a6853 100644
--- a/src/types/tryghost-validator.d.ts
+++ b/src/types/tryghost-validator.d.ts
@@ -5,7 +5,7 @@ declare module '@tryghost/validator' {
         isURL(str: string): boolean;
         isEmail(str: string): boolean;
         isIn(str: string, values: string[]): boolean;
-        isUUID(str: string, version?: number): boolean;
+        isUUID(str: string, version?: number | 'loose' | 'all' | 'nil' | 'max'): boolean;
         isBoolean(str: string): boolean;
         isInt(str: string, options?: {min?: number; max?: number}): boolean;
         isLowercase(str: string): boolean;
@@ -20,4 +20,4 @@ declare module '@tryghost/validator' {
     
     const validator: Validator;
     export default validator;
-}
\ No newline at end of file
+}
diff --git a/test/unit/schemas/v1/page-hit-raw.test.ts b/test/unit/schemas/v1/page-hit-raw.test.ts
index 6b3a4d6f..8f6c305a 100644
--- a/test/unit/schemas/v1/page-hit-raw.test.ts
+++ b/test/unit/schemas/v1/page-hit-raw.test.ts
@@ -104,6 +104,14 @@ describe('PageHitRawSchema v1', () => {
             expect(Value.Check(PageHitRawSchema, validData)).toBe(true);
         });
 
+        it('should validate UUID-shaped values without requiring RFC version and variant bits', () => {
+            const validData = {
+                ...validPageHitRaw,
+                site_uuid: '12345678-1234-1234-1234-123456789012'
+            };
+            expect(Value.Check(PageHitRawSchema, validData)).toBe(true);
+        });
+
         it('should reject invalid UUID format', () => {
             const invalidData = {
                 ...validPageHitRaw,
diff --git a/yarn.lock b/yarn.lock
index c1fee1be..84ed7d37 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1558,11 +1558,6 @@
   resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-2.0.1.tgz#35adc6222e3662fa2222ce123b961476a746b9ea"
   integrity sha512-HqmEUIGRJ5fSXchkVgR5F7qn48bDBzv0kWj/Kfu5e6uci4UlEeng4331LnBkWffb++Ei3FOVLxo8JJWMFBDMeQ==
 
-"@tryghost/errors@3.1.0":
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/@tryghost/errors/-/errors-3.1.0.tgz#d02112b290f5358c2e73f148084d3bad4cf72c17"
-  integrity sha512-vavmjjIAxngGuKK+D6vzYM+Bi36Td1cVEPtj25OFfHJj3xwoZL1Hji/wJylzqIRIFoCGvvHw+Ztnqjl9yLLAVw==
-
 "@tryghost/errors@3.2.0":
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/@tryghost/errors/-/errors-3.2.0.tgz#d6dcc78fcdebd6c6767653e0fd859b93791194e7"
@@ -1573,21 +1568,21 @@
   resolved "https://registry.yarnpkg.com/@tryghost/referrer-parser/-/referrer-parser-0.1.16.tgz#47c26876d8b76f4e3f2b89968aed20380146e581"
   integrity sha512-lCs+puTmZW8UIJ3rI00GP70ndi/fntPKZ2ai2T5oKOfZg/X5QKLX6Pj6uLPvA2XTKp+4+jfAzuBUf3TiEMDZSA==
 
-"@tryghost/tpl@2.1.0":
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/@tryghost/tpl/-/tpl-2.1.0.tgz#48882a23bf929508d5a3faf2f27194ea520d6d75"
-  integrity sha512-NIzGwyHcFUnJRmaDkd5wx6X+lXfqXqUbsICKO4KcPFtwmqLVButlbidNZsXLdoblyI2J5jS6JIGY22TB+mtiBw==
+"@tryghost/tpl@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@tryghost/tpl/-/tpl-2.2.0.tgz#8178f529f36c6e9eb7a015e5a0a7eb5e11b8a33b"
+  integrity sha512-6OFCFHNzJxbZ0HXiLIAKJz5OkT6cdZId19m6UZ2+xN8oBg14iZwhoHoBWCzKNDrFN53t3N5JHM3oa/WtoB+BKw==
 
-"@tryghost/validator@2.1.0":
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/@tryghost/validator/-/validator-2.1.0.tgz#11cf6bc9690e5c45273e150e5df17bfbe7619b8f"
-  integrity sha512-HdM5ucxn91WG4pkLOIojPRFKWW1wF4IS9lhyxv95gA32AMWnGBpA5B1cQ9/Jv30Xn3ZBz6L7nxmoKtmdsRus7A==
+"@tryghost/validator@3.1.0":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@tryghost/validator/-/validator-3.1.0.tgz#53462554ae385384e9ed2ebbb7a8f64113d3aa0a"
+  integrity sha512-/C0uetcZA5In8jKnXJ31fVRbVkmxqBE+FBjz9w6Uj0/jG/7xbDzrpmwo1QHboc+5HfKFzvIvaLNTnjskBi28eQ==
   dependencies:
-    "@tryghost/errors" "3.1.0"
-    "@tryghost/tpl" "2.1.0"
+    "@tryghost/errors" "3.2.0"
+    "@tryghost/tpl" "2.2.0"
     lodash "4.18.1"
     moment-timezone "^0.5.23"
-    validator "7.2.0"
+    validator "13.15.35"
 
 "@tybys/wasm-util@^0.10.1":
   version "0.10.1"
@@ -4886,10 +4881,10 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-validator@7.2.0:
-  version "7.2.0"
-  resolved "https://registry.yarnpkg.com/validator/-/validator-7.2.0.tgz#a63dcbaba51d4350bf8df20988e0d5a54d711791"
-  integrity sha512-c8NGTUYeBEcUIGeMppmNVKHE7wwfm3mYbNZxV+c5mlv9fDHI7Ad3p07qfNrn/CvpdkK2k61fOLRO2sTEhgQXmg==
+validator@13.15.35:
+  version "13.15.35"
+  resolved "https://registry.yarnpkg.com/validator/-/validator-13.15.35.tgz#81cf455c51f15b69d8d340be5914f3fab00dbf7f"
+  integrity sha512-TQ5pAGhd5whStmqWvYF4OjQROlmv9SMFVt37qoCBdqRffuuklWYQlCNnEs2ZaIBD1kZRNnikiZOS1eqgkar0iw==
 
 vite@8.0.10, "vite@^6.0.0 || ^7.0.0 || ^8.0.0":
   version "8.0.10"