diff --git a/packages/schemas/src/db-entries/oidc-model-instance.ts b/packages/schemas/src/db-entries/oidc-model-instance.ts
index c3eb09e25..125511f47 100644
--- a/packages/schemas/src/db-entries/oidc-model-instance.ts
+++ b/packages/schemas/src/db-entries/oidc-model-instance.ts
@@ -11,7 +11,7 @@ export type OidcModelInstanceDBEntry = {
   grantId?: string;
 };
 
-export const OidcModelInstances = {
+export const OidcModelInstances = Object.freeze({
   table: 'oidc_model_instances',
   fields: {
     modelName: 'model_name',
@@ -23,4 +23,4 @@ export const OidcModelInstances = {
     uid: 'uid',
     grantId: 'grant_id',
   },
-};
+} as const);
diff --git a/packages/schemas/src/gen/index.ts b/packages/schemas/src/gen/index.ts
index d4018012a..869c34ab8 100644
--- a/packages/schemas/src/gen/index.ts
+++ b/packages/schemas/src/gen/index.ts
@@ -96,12 +96,12 @@ const generate = async () => {
               ),
               '};',
               '',
-              `export const ${camelcase(name, { pascalCase: true })} = {`,
+              `export const ${camelcase(name, { pascalCase: true })} = Object.freeze({`,
               `  table: '${name}',`,
               `  fields: {`,
               ...fields.map(({ name }) => `    ${camelcase(name)}: '${name}',`),
               `  },`,
-              `};`,
+              `} as const);`,
             ].join('\n')
           )
           .join('\n') +