diff --git a/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/api/QueryStoreManager.java b/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/api/QueryStoreManager.java
index 08828556405..ee565316df8 100644
--- a/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/api/QueryStoreManager.java
+++ b/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/api/QueryStoreManager.java
@@ -23,6 +23,7 @@
 import com.mongodb.client.model.Aggregates;
 import com.mongodb.client.model.Field;
 import com.mongodb.client.model.Filters;
+import com.mongodb.client.model.Updates;
 import com.mongodb.client.model.Projections;
 import com.mongodb.client.model.Sorts;
 import org.bson.Document;
@@ -298,7 +299,7 @@ else if (count == 0)
         return matchingQueries;
     }
 
-    public Query getQuery(String queryId)
+    public Query getQuery(String queryId) throws JsonProcessingException
     {
         List<Query> matchingQueries = LazyIterate.collect(this.getQueryCollection().find(Filters.eq("id", queryId)), this::documentToQuery).toList();
         if (matchingQueries.size() > 1)
@@ -309,7 +310,13 @@ else if (matchingQueries.size() == 0)
         {
             throw new ApplicationQueryException("Can't find query with ID '" + queryId + "'", Response.Status.NOT_FOUND);
         }
-        return matchingQueries.get(0);
+        Query query = matchingQueries.get(0);
+        query.lastOpenAt = Instant.now().toEpochMilli();
+        this.getQueryCollection().updateOne(
+                Filters.eq("id", queryId),
+                Updates.set("lastOpenAt", Instant.now().toEpochMilli())
+        );
+        return query;
     }
 
     public QueryStoreStats getQueryStoreStats() throws JsonProcessingException
@@ -339,6 +346,7 @@ public Query createQuery(Query query, String currentUser) throws JsonProcessingE
         }
         query.createdAt = Instant.now().toEpochMilli();
         query.lastUpdatedAt = query.createdAt;
+        query.lastOpenAt = query.createdAt;
         this.getQueryCollection().insertOne(queryToDocument(query));
         QueryEvent createdEvent = createEvent(query.id, QueryEvent.QueryEventType.CREATED);
         createdEvent.timestamp = query.createdAt;
@@ -374,6 +382,7 @@ else if (matchingQueries.size() == 0)
         query.owner = currentUser;
         query.createdAt = currentQuery.createdAt;
         query.lastUpdatedAt = Instant.now().toEpochMilli();
+        query.lastOpenAt = Instant.now().toEpochMilli();
         query.originalVersionId = currentQuery.originalVersionId;
         this.getQueryCollection().findOneAndReplace(Filters.eq("id", queryId), queryToDocument(query));
         QueryEvent updatedEvent = createEvent(query.id, QueryEvent.QueryEventType.UPDATED);
@@ -411,6 +420,7 @@ public Query patchQuery(String queryId, Query updatedQuery, String currentUser)
         }
         currentQuery.owner = currentUser;
         currentQuery.lastUpdatedAt = Instant.now().toEpochMilli();
+        currentQuery.lastOpenAt = Instant.now().toEpochMilli();
         this.getQueryCollection().findOneAndReplace(Filters.eq("id", queryId), queryToDocument(currentQuery));
         QueryEvent updatedEvent = createEvent(queryId, QueryEvent.QueryEventType.UPDATED);
         updatedEvent.timestamp = currentQuery.lastUpdatedAt;
diff --git a/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/model/Query.java b/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/model/Query.java
index ac80f3f2f89..2e2c0e50fae 100644
--- a/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/model/Query.java
+++ b/legend-engine-application-query/src/main/java/org/finos/legend/engine/application/query/model/Query.java
@@ -39,6 +39,7 @@ public class Query
     public String content;
     public Long lastUpdatedAt;
     public Long createdAt;
+    public Long lastOpenAt;
 
     public List<TaggedValue> taggedValues;
     public List<StereotypePtr> stereotypes;
diff --git a/legend-engine-application-query/src/test/java/org/finos/legend/engine/application/query/api/TestQueryStoreManager.java b/legend-engine-application-query/src/test/java/org/finos/legend/engine/application/query/api/TestQueryStoreManager.java
index 2eabf5c4c79..205bfebf51a 100644
--- a/legend-engine-application-query/src/test/java/org/finos/legend/engine/application/query/api/TestQueryStoreManager.java
+++ b/legend-engine-application-query/src/test/java/org/finos/legend/engine/application/query/api/TestQueryStoreManager.java
@@ -576,11 +576,15 @@ public void testGetQueriesWithParameterValues() throws Exception
 
         Query query1 = queryStoreManager.getQuery("1");
         Assert.assertEquals(0, query1.defaultParameterValues.size());
+        Assert.assertNotNull(query1.lastOpenAt);
+        Assert.assertNotEquals(query1.lastOpenAt, query1.createdAt);
 
         Query query2 = queryStoreManager.getQuery("2");
         Assert.assertEquals(1, query2.defaultParameterValues.size());
         Assert.assertEquals("booleanParam1", query2.defaultParameterValues.get(0).name);
         Assert.assertEquals("true", query2.defaultParameterValues.get(0).content);
+        Assert.assertNotNull(query2.lastOpenAt);
+        Assert.assertNotEquals(query2.lastOpenAt, query2.createdAt);
 
         Query query4 = queryStoreManager.getQuery("4");
         Assert.assertEquals(3, query4.defaultParameterValues.size());
@@ -588,6 +592,8 @@ public void testGetQueriesWithParameterValues() throws Exception
         Assert.assertEquals("stringParam2", query4.defaultParameterValues.get(1).name);
         Assert.assertEquals("myListParam3", query4.defaultParameterValues.get(2).name);
         Assert.assertEquals("['d','a']", query4.defaultParameterValues.get(2).content);
+        Assert.assertNotNull(query4.lastOpenAt);
+        Assert.assertNotEquals(query4.lastOpenAt, query4.createdAt);
     }
 
 
@@ -735,7 +741,7 @@ public void testCreateSimpleQuery() throws Exception
         Assert.assertEquals(0, createdQuery.taggedValues.size());
         Assert.assertNotNull(createdQuery.createdAt);
         Assert.assertEquals(createdQuery.createdAt, createdQuery.lastUpdatedAt);
-
+        Assert.assertEquals(createdQuery.lastOpenAt, createdQuery.lastUpdatedAt);
     }
 
     @Test