diff --git a/keycloak-js/index.d.ts b/keycloak-js/index.d.ts
index 2cd417da6b..540084d6fd 100644
--- a/keycloak-js/index.d.ts
+++ b/keycloak-js/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for keycloak-js 2.4
+// Type definitions for keycloak-js 2.5
 // Project: https://github.com/keycloak/keycloak
 // Definitions by: Brett Epps <https://github.com/eppsilon>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
diff --git a/keycloak-js/keycloak-authz.d.ts b/keycloak-js/keycloak-authz.d.ts
new file mode 100644
index 0000000000..4db057ad97
--- /dev/null
+++ b/keycloak-js/keycloak-authz.d.ts
@@ -0,0 +1,39 @@
+import * as Keycloak from 'keycloak-js';
+
+export as namespace KeycloakAuthorization;
+
+export = KeycloakAuthorization;
+
+/**
+ * Creates a new Keycloak client instance.
+ * @param config Path to a JSON config file or a plain config object.
+ */
+declare function KeycloakAuthorization(keycloak: Keycloak.KeycloakInstance): KeycloakAuthorization.KeycloakAuthorizationInstance;
+
+declare namespace KeycloakAuthorization {
+	export interface KeycloakAuthorizationPromise {
+		then(onGrant: (rpt: string) => void, onDeny: () => void, onError: () => void): void;
+	}
+
+	export interface KeycloakAuthorizationInstance {
+		rpt: any;
+		config: { rpt_endpoint: string };
+
+		init(): void;
+
+		/**
+		 * This method enables client applications to better integrate with resource servers protected by a Keycloak
+		 * policy enforcer.
+		 *
+		 * In this case, the resource server will respond with a 401 status code and a WWW-Authenticate header holding the
+		 * necessary information to ask a Keycloak server for authorization data using both UMA and Entitlement protocol,
+		 * depending on how the policy enforcer at the resource server was configured.
+		 */
+		authorize(wwwAuthenticateHeader: string): KeycloakAuthorizationPromise;
+
+		/**
+		 * Obtains all entitlements from a Keycloak server based on a given resourceServerId.
+		 */
+		entitlement(resourceServerId: string, entitlementRequest: {}): KeycloakAuthorizationPromise;
+	}
+}
diff --git a/keycloak-js/keycloak-js-tests.ts b/keycloak-js/keycloak-js-tests.ts
index f0957d2114..dc97d8da18 100644
--- a/keycloak-js/keycloak-js-tests.ts
+++ b/keycloak-js/keycloak-js-tests.ts
@@ -11,4 +11,8 @@ import {
   KeycloakResponseType
 } from 'keycloak-js';
 
+import * as KeycloakAuthorization from 'keycloak-js/keycloak-authz';
+import { KeycloakAuthorizationPromise } from 'keycloak-js/keycloak-authz';
+
 let keycloak = Keycloak();
+let keycloakAuthz = KeycloakAuthorization(keycloak);
diff --git a/keycloak-js/tsconfig.json b/keycloak-js/tsconfig.json
index 02d8f5053a..7ac994a5dc 100644
--- a/keycloak-js/tsconfig.json
+++ b/keycloak-js/tsconfig.json
@@ -17,6 +17,7 @@
     },
     "files": [
         "index.d.ts",
+        "keycloak-authz.d.ts",
         "keycloak-js-tests.ts"
     ]
-}
\ No newline at end of file
+}