diff --git a/lib/grant-types/client-credentials-grant-type.js b/lib/grant-types/client-credentials-grant-type.js
index fa5cd27..a645a93 100644
--- a/lib/grant-types/client-credentials-grant-type.js
+++ b/lib/grant-types/client-credentials-grant-type.js
@@ -71,10 +71,15 @@ class ClientCredentialsGrantType extends AbstractGrantType {
   async saveToken(user, client, requestedScope) {
     const validatedScope = await this.validateScope(user, client, requestedScope);
     const accessToken = await this.generateAccessToken(client, user, validatedScope);
+    const refreshToken = await this.generateRefreshToken(client, user, validatedScope);
     const accessTokenExpiresAt = await this.getAccessTokenExpiresAt(client, user, validatedScope);
+    const refreshTokenExpiresAt = await this.getRefreshTokenExpiresAt();
+    
     const token = {
       accessToken,
       accessTokenExpiresAt,
+      refreshToken,
+      refreshTokenExpiresAt,
       scope: validatedScope,
     };