diff --git a/__tests__/lhisp-oauth-client.test.ts b/__tests__/lhisp-oauth-client.test.ts
index a47af5b..c4e26bd 100644
--- a/__tests__/lhisp-oauth-client.test.ts
+++ b/__tests__/lhisp-oauth-client.test.ts
@@ -105,6 +105,24 @@ describe("Get Access Token", () => {
       })
     );
   });
+
+  it("Shoud Get with Credentials without ContentType", async () => {
+    const cli = getOauthClient({
+      ...baseClientParams,
+      disableAuthContentType: true,
+    });
+    await accessTokenValidator(cli);
+    expect(mockedAxios.request).toBeCalledWith(
+      expect.objectContaining({
+        url: authUrl,
+        method: "POST",
+        headers: {
+          Authorization: basicAuth,
+        },
+        data: `grant_type=${defaultGrantValue}`,
+      })
+    );
+  });
 });
 
 describe("Request", () => {
diff --git a/package-lock.json b/package-lock.json
index 8ef132f..9069b7a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "lhisp-oauth-client",
-  "version": "1.0.13",
+  "version": "1.0.14",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "lhisp-oauth-client",
-      "version": "1.0.13",
+      "version": "1.0.14",
       "license": "MIT",
       "dependencies": {
         "axios": "^1.4.0",
diff --git a/package.json b/package.json
index aa68772..abcd646 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lhisp-oauth-client",
-  "version": "1.0.13",
+  "version": "1.0.14",
   "main": "src/index",
   "types": "src/index.d.ts",
   "repository": "git@bitbucket.org:leandro_costa/lhisp-oauth-client.git",
diff --git a/src/lhisp-oauth-client.t.ts b/src/lhisp-oauth-client.t.ts
index cacb4f8..954b77c 100644
--- a/src/lhisp-oauth-client.t.ts
+++ b/src/lhisp-oauth-client.t.ts
@@ -18,6 +18,7 @@ export interface LhispOauthClientConstructorParams {
   grantType?: string;
   authContentType?: ContentType;
   sendAuthCredentialsOnRequestBody?: boolean;
+  disableAuthContentType?: boolean;
   debug?: boolean;
 }
 
diff --git a/src/lhisp-oauth-client.ts b/src/lhisp-oauth-client.ts
index 8c63e33..e51f7a5 100644
--- a/src/lhisp-oauth-client.ts
+++ b/src/lhisp-oauth-client.ts
@@ -21,6 +21,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
   protected authHeaderName: string;
   protected tokenHeaderName: string;
   protected authContentType: ContentType;
+  protected disableAuthContentType = false;
   protected certificado?: string;
   protected senhaCertificado?: string;
   protected authScope?: string;
@@ -53,6 +54,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
     this.authScope = params.authScope;
     this.grantType = params.grantType || defaultGrantType;
     this.authContentType = params.authContentType || defaultAuthContentType;
+    this.disableAuthContentType = Boolean(params.disableAuthContentType);
     this.clientId = params.clientId;
     this.clientSecret = params.clientSecret;
     this.authHeaderName = params.authHeaderName || defaultAuthHeaderName;
@@ -98,7 +100,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
         httpsAgent: this.agent,
         headers: {
           [this.authHeaderName]: this.getAuthHeaderValue(),
-          "Content-Type": this.authContentType,
+          ...(this.disableAuthContentType ? {} : { "Content-Type": this.authContentType }),
         },
         data: {},
       };
@@ -111,10 +113,7 @@ export class LhispOauthClient<iAccessToken extends AccessToken = AccessToken> {
         if (this.clientSecret) authRequestOpt.data.client_secret = this.clientSecret;
       }
 
-      authRequestOpt.data = this.parseData({
-        data: authRequestOpt.data,
-        contentType: this.authContentType,
-      });
+      authRequestOpt.data = this.parseData({ data: authRequestOpt.data, contentType: this.authContentType });
       const resp = await axios.request(authRequestOpt);
       this.accessToken = this.buildAccessToken(resp.data);
       this.tokenCreatedAt = new Date().getTime();