diff --git a/package-lock.json b/package-lock.json
index 16e6be8..4e16b3a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@acrolinx/sidebar-interface",
-  "version": "15.3.1",
+  "version": "15.4.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@acrolinx/sidebar-interface",
-      "version": "15.3.1",
+      "version": "15.4.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@typescript-eslint/eslint-plugin": "^5.45.0",
diff --git a/package.json b/package.json
index 3233791..4ebb791 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@acrolinx/sidebar-interface",
   "description": "The interface of the Acrolinx Sidebar",
-  "version": "15.3.1",
+  "version": "15.4.0",
   "license": "Apache-2.0",
   "author": "Acrolinx",
   "url": "https://www.acrolinx.com",
diff --git a/src/index.ts b/src/index.ts
index 223ec24..1883a7c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -206,6 +206,26 @@ export interface InitParameters extends SidebarConfiguration {
    * New since sidebar version 14.11.0.
    */
   accessToken?: string;
+
+  /**
+   * KeyCloak tokens used used by sidebar to authenticate in Acrolinx One
+   * Available: Acrolinx One Cloud
+   */
+  keyCloakTokens?: KeyCloakTokens;
+}
+
+export interface KeyCloakTokens {
+  /**
+   * The sidebar uses this optional KeyCloak access token to sign in to Acrolinx One.
+   * Available in Acrolinx One Cloud
+   */
+  keyCloakAccessToken: string;
+
+  /**
+   * The sidebar uses this optional KeyCloak refresh token to fetch new access token.
+   * Available in Acrolinx One Cloud
+   */
+  keyCloakRefreshToken: string;
 }
 
 export type UiMode = 'default' | 'noOptions';