diff --git a/src/main/java/com/example/cosmos_serversb/entities/Group.java b/src/main/java/com/example/cosmos_serversb/entities/Group.java
index e774568..8aae1f5 100644
--- a/src/main/java/com/example/cosmos_serversb/entities/Group.java
+++ b/src/main/java/com/example/cosmos_serversb/entities/Group.java
@@ -3,16 +3,15 @@
 
 import com.example.cosmos_serversb.models.SessionManager;
 import com.example.cosmos_serversb.models.Users;
-import com.sun.corba.se.impl.orbutil.graph.Graph;
 import org.hibernate.Session;
 
-import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Set;
 
 public class Group {
     private String gId;
     private String uri, name;
+    private long requestHash = 0;
     private Set<User> members = new HashSet<>();
     private Set<Request> requests;
 
@@ -58,6 +57,18 @@
         return name;
     }
 
+    public long getRequestHash() {
+        return requestHash;
+    }
+
+    private void setRequestHash(long hash) {
+        this.requestHash = hash;
+    }
+
+    public void updateRequestHash(Request request){
+        setRequestHash(getRequestHash()+1);
+    }
+
     public Set<Request> getRequests(){
         return requests;
     }