diff --git a/src/OpenIDConnectClient.php b/src/OpenIDConnectClient.php
index 6aa80b17..54b3e680 100644
--- a/src/OpenIDConnectClient.php
+++ b/src/OpenIDConnectClient.php
@@ -1030,6 +1030,10 @@ public function refreshToken(string $refresh_token) {
             $this->accessToken = $json->access_token;
         }
 
+        if (isset($json->id_token)) {
+            $this->idToken = $json->id_token;
+        }
+
         if (isset($json->refresh_token)) {
             $this->refreshToken = $json->refresh_token;
         }