diff --git a/src/main/java/org/gcube/smartgears/utils/GcubeJwt.java b/src/main/java/org/gcube/smartgears/utils/GcubeJwt.java
index cde52ba..b86540c 100644
--- a/src/main/java/org/gcube/smartgears/utils/GcubeJwt.java
+++ b/src/main/java/org/gcube/smartgears/utils/GcubeJwt.java
@@ -4,6 +4,7 @@ import java.io.UnsupportedEncodingException;
 import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -14,7 +15,7 @@ import org.gcube.com.fasterxml.jackson.annotation.JsonProperty;
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class GcubeJwt {
 
-	protected final static List<String> MINIMAL_ROLES = List.of("Member");
+	protected final static List<String> MINIMAL_ROLES = Arrays.asList("Member");
 
 	@JsonProperty("aud")
 	private String context;