diff --git a/src/config/serverConfig.ts b/src/config/serverConfig.ts
index d783185..4f5dd27 100644
--- a/src/config/serverConfig.ts
+++ b/src/config/serverConfig.ts
@@ -1,8 +1,8 @@
 import type { ServerI } from 'discreetly-interfaces';
 import 'dotenv/config';
 
-let SERVER_ID: bigint = 0n;
-let NAME: string = 'undefined';
+let SERVER_ID = 0n;
+let NAME = 'undefined';
 
 try {
   SERVER_ID = process.env.SERVER_ID ? (process.env.SERVER_ID as unknown as bigint) : 0n;
diff --git a/src/crypto/verifier.ts b/src/crypto/verifier.ts
index ae95991..e8b5352 100644
--- a/src/crypto/verifier.ts
+++ b/src/crypto/verifier.ts
@@ -3,7 +3,6 @@ import { str2BigInt } from 'discreetly-interfaces';
 import { RLNVerifier } from 'rlnjs';
 import vkey from './verification_key';
 import { Group } from '@semaphore-protocol/group';
-import { pp } from '../utils';
 
 const v = new RLNVerifier(vkey);
 
diff --git a/src/endpoints/index.ts b/src/endpoints/index.ts
index c36e0f7..2d12630 100644
--- a/src/endpoints/index.ts
+++ b/src/endpoints/index.ts
@@ -17,7 +17,7 @@ const prisma = new PrismaClient();
 
 function asyncHandler(fn: {
   (req: Request, res: Response): Promise<void>;
-  (arg0: any, arg1: any): any;
+  (arg0: unknown, arg1: unknown): unknown;
 }) {
   return (req, res) => {
     void Promise.resolve(fn(req, res)).catch((err) => {
diff --git a/src/server.ts b/src/server.ts
index d2cc29b..313677b 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -41,13 +41,13 @@ function initAppListeners(PORT) {
   const httpServer = http.createServer(app).listen(PORT, () => {
     pp(`Server is running at port ${PORT}`);
   });
-  return app
+  return app;
 }
 
 /**
  * This is the main entry point for the server
  */
-let _app
+let _app: express.Express;
 if (!process.env.NODE_ENV || process.env.NODE_ENV === 'development') {
   console.log('~~~~DEVELOPMENT MODE~~~~');
   console.log(serverConfig);
@@ -65,5 +65,4 @@ if (!process.env.NODE_ENV || process.env.NODE_ENV === 'development') {
   initWebsockets(_app);
 }
 
-
 export default _app;
diff --git a/src/utils.ts b/src/utils.ts
index 54faf3d..9c60c76 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,5 +1,5 @@
-import { genId } from 'discreetly-interfaces'
-import { serverConfig } from './config/serverConfig'
+import { genId } from 'discreetly-interfaces';
+import { serverConfig } from './config/serverConfig';
 import { generateClaimCodes } from 'discreetly-claimcodes';
 import type { ClaimCodeT } from 'discreetly-claimcodes';
 /* eslint-disable @typescript-eslint/no-explicit-any */
@@ -32,9 +32,9 @@ export function genMockUsers(numMockUsers: number): string[] {
 }
 
 export function genClaimCodeArray(numClaimCodes: number): { claimcode: string }[] {
-  const claimCodes = generateClaimCodes(numClaimCodes);
+  const claimCodes: ClaimCodeT[] = generateClaimCodes(numClaimCodes) as ClaimCodeT[];
   const codeArr: { claimcode: string }[] = claimCodes.map((code: ClaimCodeT) => ({
-    claimcode: code.code
+    claimcode: String(code.code)
   }));
   return codeArr;
 }