diff --git a/src/index.ts b/src/index.ts
index 1b0cabe1..fd6887d6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -24,16 +24,30 @@ const VerifiedSnapVersionStruct = object({
   checksum: ChecksumStruct,
 });
 
+export const AuthorStruct = object({
+  name: string(),
+  website: string(),
+});
+
+export type Author = Infer<typeof AuthorStruct>;
+
+export const AuditStruct = object({
+  auditor: string(),
+  report: string(),
+});
+
+export type Audit = Infer<typeof AuditStruct>;
+
 export const VerifiedSnapStruct = object({
   id: NpmIdStruct,
   metadata: object({
     name: string(),
     type: optional(enums(['account'])),
-    author: optional(string()),
+    author: optional(AuthorStruct),
     website: optional(string()),
     summary: optional(string()),
     description: optional(string()),
-    audits: optional(array(string())),
+    audits: optional(array(AuditStruct)),
     tags: optional(array(string())),
     support: optional(string()),
     sourceCode: optional(string()),
diff --git a/src/registry.test.ts b/src/registry.test.ts
index 70461509..776e454a 100644
--- a/src/registry.test.ts
+++ b/src/registry.test.ts
@@ -1,5 +1,7 @@
+import type { SemVerRange, SemVerVersion } from '@metamask/utils';
 import { assert } from 'superstruct';
 
+import type { SnapsRegistryDatabase } from '.';
 import { SnapsRegistryDatabaseStruct } from '.';
 import registry from './registry.json';
 
@@ -10,27 +12,36 @@ describe('Snaps Registry', () => {
 
   it('has a valid account snap', () => {
     /* eslint-disable @typescript-eslint/naming-convention */
-    const registryDb = {
+    const registryDb: SnapsRegistryDatabase = {
       verifiedSnaps: {
         'npm:example-snap': {
           id: 'npm:example-snap',
           metadata: {
             name: 'Example Snap',
             type: 'account',
-            author: 'Example Author',
+            author: {
+              name: 'MetaMask',
+              website: 'https://metamask.io',
+            },
             website: 'https://metamask.io',
             summary: 'Example Snap',
             description: 'Longer Example Snap description.',
             audits: [
-              'https://metamask.io/example/report-1.pdf',
-              'https://metamask.io/example/report-2.pdf',
+              {
+                auditor: 'Example Auditor',
+                report: 'https://metamask.io/example/report-1.pdf',
+              },
+              {
+                auditor: 'Example Auditor',
+                report: 'https://metamask.io/example/report-2.pdf',
+              },
             ],
             support: 'https://metamask.io/example/support',
             sourceCode: 'https://metamask.io/example/source-code',
             tags: ['accounts', 'example'],
           },
           versions: {
-            '0.1.0': {
+            ['0.1.0' as SemVerVersion]: {
               checksum: 'A83r5/ZIcKeKw3An13HBeV4CAofj7jGK5hOStmHY6A0=',
             },
           },
@@ -39,7 +50,7 @@ describe('Snaps Registry', () => {
       blockedSnaps: [
         {
           id: 'npm:example-blocked-snap',
-          versionRange: '^0.1.0',
+          versionRange: '^0.1.0' as SemVerRange,
           reason: {
             explanation: 'Example explanation',
             url: 'https://metamask.io/example/explanation',
@@ -61,7 +72,7 @@ describe('Snaps Registry', () => {
 
   it('has a only mandatory fields', () => {
     /* eslint-disable @typescript-eslint/naming-convention */
-    const registryDb = {
+    const registryDb: SnapsRegistryDatabase = {
       verifiedSnaps: {
         'npm:example-snap': {
           id: 'npm:example-snap',
@@ -69,7 +80,7 @@ describe('Snaps Registry', () => {
             name: 'Example Snap',
           },
           versions: {
-            '0.1.0': {
+            ['0.1.0' as SemVerVersion]: {
               checksum: 'A83r5/ZIcKeKw3An13HBeV4CAofj7jGK5hOStmHY6A0=',
             },
           },
@@ -78,7 +89,7 @@ describe('Snaps Registry', () => {
       blockedSnaps: [
         {
           id: 'npm:example-blocked-snap',
-          versionRange: '^0.1.0',
+          versionRange: '^0.1.0' as SemVerRange,
         },
         {
           checksum: 'B3ar53ZIcKeKw3An3aqBeV4CAofj7jGK5hOAAxQY6A0=',
@@ -91,17 +102,17 @@ describe('Snaps Registry', () => {
   });
 
   it('should throw when the metadata has an unexpected field', () => {
-    /* eslint-disable @typescript-eslint/naming-convention */
-    const registryDb = {
+    const registryDb: SnapsRegistryDatabase = {
       verifiedSnaps: {
         'npm:example-snap': {
           id: 'npm:example-snap',
           metadata: {
             name: 'Example Snap',
+            // @ts-expect-error - Unexpected field.
             unexpected: 'field',
           },
           versions: {
-            '0.1.0': {
+            ['0.1.0' as SemVerVersion]: {
               checksum: 'A83r5/ZIcKeKw3An13HBeV4CAofj7jGK5hOStmHY6A0=',
             },
           },