diff --git a/ceresdb-example/src/test/java/io/ceresdb/CeresDBTest.java b/ceresdb-example/src/test/java/io/ceresdb/CeresDBTest.java
index 885a8ca..5b81aed 100644
--- a/ceresdb-example/src/test/java/io/ceresdb/CeresDBTest.java
+++ b/ceresdb-example/src/test/java/io/ceresdb/CeresDBTest.java
@@ -159,7 +159,7 @@ public void comprehensiveTest() throws ExecutionException, InterruptedException
 
         ok.stream().forEach(row -> {
             LOG.info(
-                    "Data: ts={}, tString={}, tInt64={}, fString={}, fBool={}, fDouble={}, fFloat={}, fInt64={}, fInt32={}, fInt16={},"
+                    "======> Data: ts={}, tString={}, tInt64={}, fString={}, fBool={}, fDouble={}, fFloat={}, fInt64={}, fInt32={}, fInt16={},"
                      + //
             "fInt8={}, fUint64={}, fUint32={}, fUint16={}, fUint8={}, fTimestamp={}, fVarbinary={}", //
                     row.getColumn("ts").getValue().getTimestamp(), //
diff --git a/ceresdb-protocol/src/main/java/io/ceresdb/Route.java b/ceresdb-protocol/src/main/java/io/ceresdb/Route.java
index 2793367..ed5d641 100644
--- a/ceresdb-protocol/src/main/java/io/ceresdb/Route.java
+++ b/ceresdb-protocol/src/main/java/io/ceresdb/Route.java
@@ -15,7 +15,6 @@
 public class Route {
     private String           table;
     private Endpoint         endpoint;
-    private Object           ext;
     private final AtomicLong lastHit = new AtomicLong(Clock.defaultClock().getTick());
 
     public static Route invalid(final String table) {
@@ -23,18 +22,13 @@ public static Route invalid(final String table) {
     }
 
     public static Route of(final Endpoint endpoint) {
-        return of(null, endpoint, null);
+        return of(null, endpoint);
     }
 
     public static Route of(final String table, final Endpoint endpoint) {
-        return of(table, endpoint, null);
-    }
-
-    public static Route of(final String table, final Endpoint endpoint, final Object ext) {
         final Route r = new Route();
         r.table = table;
         r.endpoint = endpoint;
-        r.ext = ext;
         return r;
     }
 
@@ -54,14 +48,6 @@ public void setEndpoint(Endpoint endpoint) {
         this.endpoint = endpoint;
     }
 
-    public Object getExt() {
-        return ext;
-    }
-
-    public void setExt(Object ext) {
-        this.ext = ext;
-    }
-
     public long getLastHit() {
         return lastHit.get();
     }
@@ -78,7 +64,6 @@ public String toString() {
         return "Route{" + //
                "table='" + table + '\'' + //
                ", endpoint=" + endpoint + //
-               ", ext=" + ext + //
                ", lastHit=" + lastHit.get() + //
                '}';
     }
diff --git a/ceresdb-protocol/src/main/java/io/ceresdb/RouterClient.java b/ceresdb-protocol/src/main/java/io/ceresdb/RouterClient.java
index 267f0a9..67b833d 100644
--- a/ceresdb-protocol/src/main/java/io/ceresdb/RouterClient.java
+++ b/ceresdb-protocol/src/main/java/io/ceresdb/RouterClient.java
@@ -410,7 +410,7 @@ private CompletableFuture<Storage.RouteResponse> invokeRpc(final Storage.RouteRe
 
         private Route toRouteObj(final Storage.Route r) {
             final Storage.Endpoint ep = Requires.requireNonNull(r.getEndpoint(), "CeresDB.Endpoint");
-            return Route.of(r.getTable(), Endpoint.of(ep.getIp(), ep.getPort()), r.getExt());
+            return Route.of(r.getTable(), Endpoint.of(ep.getIp(), ep.getPort()));
         }
     }
 }
diff --git a/pom.xml b/pom.xml
index ff4d913..2e61fc5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -74,7 +74,7 @@
         <okhttp.version>4.9.1</okhttp.version>
         <okio.version>2.8.0</okio.version>
         <project.encoding>UTF-8</project.encoding>
-        <proto-internal.version>0.3.0</proto-internal.version>
+        <proto-internal.version>1.0.0</proto-internal.version>
         <protobuf.version>3.21.7</protobuf.version>
         <!-- according to https://maven.apache.org/maven-ci-friendly.html -->
         <revision>1.0.0-alpha</revision>