diff --git a/federation/src/client/1_0/AuthenticationClient.ts b/federation/src/client/1_0/AuthenticationClient.ts
index a79f92f90..60a205aa7 100644
--- a/federation/src/client/1_0/AuthenticationClient.ts
+++ b/federation/src/client/1_0/AuthenticationClient.ts
@@ -31,7 +31,7 @@ export class AuthenticationClient {
     methodLogger.addContext('handshakeID', args.handshakeID)
     methodLogger.debug('openConnectionCallback with endpoint', this.endpoint, args)
     try {
-      const { data } = await this.client.rawRequest<any>(openConnectionCallback, { args })
+      const { data } = await this.client.rawRequest<{ openConnectionCallback: boolean }>(openConnectionCallback, { args })
       methodLogger.debug('after openConnectionCallback: data:', data)
 
       if (!data || !data.openConnectionCallback) {
@@ -51,10 +51,10 @@ export class AuthenticationClient {
     methodLogger.addContext('handshakeID', args.handshakeID)
     methodLogger.debug('authenticate with endpoint=', this.endpoint)
     try {
-      const { data } = await this.client.rawRequest<any>(authenticate, { args })
+      const { data } = await this.client.rawRequest<{ authenticate: string }>(authenticate, { args })
       methodLogger.debug('after authenticate: data:', data)
 
-      const responseJwt: string = data?.authenticate
+      const responseJwt = data?.authenticate
       if (responseJwt) {
         methodLogger.debug('received authenticated uuid as jwt', responseJwt)
         return responseJwt