diff --git a/arlas-iam-core/src/main/java/io/arlas/iam/impl/HibernateAuthService.java b/arlas-iam-core/src/main/java/io/arlas/iam/impl/HibernateAuthService.java
index 8e7b197..53c55ca 100644
--- a/arlas-iam-core/src/main/java/io/arlas/iam/impl/HibernateAuthService.java
+++ b/arlas-iam-core/src/main/java/io/arlas/iam/impl/HibernateAuthService.java
@@ -1,7 +1,5 @@
 package io.arlas.iam.impl;
 
-import com.auth0.jwt.JWT;
-import com.auth0.jwt.exceptions.JWTDecodeException;
 import com.auth0.jwt.interfaces.DecodedJWT;
 import io.arlas.client.ApiException;
 import io.arlas.commons.exceptions.ArlasException;
diff --git a/arlas-iam-core/src/main/java/io/arlas/iam/model/Permission.java b/arlas-iam-core/src/main/java/io/arlas/iam/model/Permission.java
index 8cdeee9..b0c6e04 100644
--- a/arlas-iam-core/src/main/java/io/arlas/iam/model/Permission.java
+++ b/arlas-iam-core/src/main/java/io/arlas/iam/model/Permission.java
@@ -23,7 +23,7 @@ public class Permission {
     private UUID id;
 
     @NotNull
-    @Column
+    @Column(columnDefinition = "TEXT")
     private String value;
 
     @Column