diff --git a/doc/refresh_token.md b/doc/refresh_token.md
index 148b88e..97e3be6 100644
--- a/doc/refresh_token.md
+++ b/doc/refresh_token.md
@@ -25,6 +25,8 @@ autoUpdateToken: true,
 clientId: false,
 // The the property from which to get the refresh token after a successful token refresh
 refreshTokenProp: 'refresh_token',
+// The proprety name used to send the existing token when refreshing `{ "refreshTokenSubmitProp": '...' }`
+refreshTokenSubmitProp = 'refresh_token';
 
 // If the property defined by `refreshTokenProp` is an object:
 // -----------------------------------------------------------
diff --git a/src/authService.js b/src/authService.js
index d858883..9d21d01 100644
--- a/src/authService.js
+++ b/src/authService.js
@@ -322,12 +322,13 @@ export class AuthService {
     }
 
     if (this.authentication.updateTokenCallstack.length === 0) {
-      const content = {
+      let content = {
         grant_type: 'refresh_token',
-        refresh_token: this.authentication.getRefreshToken(),
         client_id: this.config.clientId ? this.config.clientId : undefined
       };
 
+      content[this.config.refreshTokenSubmitProp] = this.authentication.getRefreshToken();
+
       this.client.post(this.config.joinBase(this.config.refreshTokenUrl
                                             ? this.config.refreshTokenUrl
                                             : this.config.loginUrl), content)
diff --git a/src/baseConfig.js b/src/baseConfig.js
index 1f0e9d0..9eb0aa1 100644
--- a/src/baseConfig.js
+++ b/src/baseConfig.js
@@ -120,6 +120,8 @@ export class BaseConfig {
   clientId = false;
   // The the property from which to get the refresh token after a successful token refresh. Can also be dotted eg "refreshTokenProp.refreshTokenProp"
   refreshTokenProp = 'refresh_token';
+  // The proprety name used to send the existing token when refreshing `{ "refreshTokenSubmitProp": '...' }`
+  refreshTokenSubmitProp = 'refresh_token';
 
   // If the property defined by `refreshTokenProp` is an object:
   // -----------------------------------------------------------