diff --git a/lib/auth.js b/lib/auth.js
index 9d5fa05..8d13189 100644
--- a/lib/auth.js
+++ b/lib/auth.js
@@ -330,7 +330,8 @@ const authClient = new Model({
 
           var deleteHeaders = {
             ...config.jsonHeaders,
-            ['X-CSRF-Token']: token
+            ['X-CSRF-Token']: token,
+            ['Authorization']: 'Bearer ' + this._bearerToken
           };
 
           return makeCredentialHTTPRequest('DELETE', url, null, deleteHeaders)
diff --git a/lib/oauth.js b/lib/oauth.js
index cd1e798..0d407e2 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -131,6 +131,10 @@ const authClient = new Model({
             ['X-CSRF-Token']: token
           };
 
+          if (this._tokenDetails && this._tokenDetails.access_token) {
+            deleteHeaders['Authorization'] = 'Bearer ' + this._tokenDetails.access_token
+          }
+
           return makeCredentialHTTPRequest('DELETE', url, null, deleteHeaders)
             .then(function() {
               this._deleteBearerToken();