diff --git a/src/lhisp-oauth-client.t.ts b/src/lhisp-oauth-client.t.ts
index 288fbe4..3ad36cc 100644
--- a/src/lhisp-oauth-client.t.ts
+++ b/src/lhisp-oauth-client.t.ts
@@ -18,7 +18,7 @@ export interface LhispOauthClientConstructorParams {
   grantType?: string;
   authContentType?: ContentType;
   sendAuthCredentialsOnRequestBody?: boolean;
-  forceTokenTypeToCamelCase?: boolean;
+  formatAccessToken?: (accessToken?: AccessToken) => string;
   debug?: boolean;
 }
 
diff --git a/src/lhisp-oauth-client.ts b/src/lhisp-oauth-client.ts
index fc13f49..cd0a8ef 100644
--- a/src/lhisp-oauth-client.ts
+++ b/src/lhisp-oauth-client.ts
@@ -32,7 +32,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
   protected tokenCreatedAt = 0;
   protected tokenExpiresIn = 0;
   protected sendAuthCredentialsOnRequestBody?: boolean;
-  protected forceTokenTypeToCamelCase?: boolean;
+  protected formatAccessToken?: (accessToken?: iAccessToken) => string;
 
   constructor(params: LhispOauthClientConstructorParams) {
     if (params.certificado) {
@@ -59,7 +59,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
     this.authHeaderName = params.authHeaderName || defaultAuthHeaderName;
     this.tokenHeaderName = params.tokenHeaderName || defaultTokenHeaderName;
     this.sendAuthCredentialsOnRequestBody = params.sendAuthCredentialsOnRequestBody;
-    this.forceTokenTypeToCamelCase = params.forceTokenTypeToCamelCase;
+    this.formatAccessToken = params.formatAccessToken;
   }
 
   getAuthHeaderValue(): string {
@@ -133,10 +133,11 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
   }
 
   getAuthToken() {
-    const tokenType = this.forceTokenTypeToCamelCase
-      ? `${this.accessToken?.token_type?.[0]?.toUpperCase()}${this.accessToken?.token_type?.substring(1)}`
-      : this.accessToken?.token_type;
-    return `${tokenType} ${this.accessToken?.access_token}`;
+    if (this.formatAccessToken) {
+      return this.formatAccessToken(this.accessToken);
+    }
+
+    return `${this.accessToken?.token_type} ${this.accessToken?.access_token}`;
   }
 
   async executarRequest<ResponseType>({