diff --git a/QueryBuilder.Tests/InsertTests.cs b/QueryBuilder.Tests/InsertTests.cs
index 926e18b2..0c72260f 100644
--- a/QueryBuilder.Tests/InsertTests.cs
+++ b/QueryBuilder.Tests/InsertTests.cs
@@ -13,11 +13,13 @@ public class InsertTests : TestSupport
     {
         private class Account
         {
-            public Account(string name, string currency = null, string created_at = null, string color = null)
+            public Account(string name, string currency = null, string created_at = null, string color = null, int pages = 0, int serie = 1)
             {
                 this.name = name ?? throw new ArgumentNullException(nameof(name));
                 this.Currency = currency;
                 this.color = color;
+                this.pages = pages;
+                this.serie = serie;
             }
 
             public string name { get; set; }
@@ -27,6 +29,12 @@ public Account(string name, string currency = null, string created_at = null, st
 
             [Ignore]
             public string color { get; set; }
+
+            [Ignore(IgnoreOperation.OnUpdate)]
+            public int pages { get; set; }
+
+            [Ignore(IgnoreOperation.OnInsert)]
+            public int serie { get; set; }
         }
 
         [Fact]
@@ -163,17 +171,17 @@ public void InsertWithByteArray()
         [Fact]
         public void InsertWithIgnoreAndColumnProperties()
         {
-            var account = new Account(name: $"popular", color: $"blue", currency: "US");
+            var account = new Account(name: $"popular", color: $"blue", currency: "US", pages: 100, serie: 10);
             var query = new Query("Account").AsInsert(account);
 
             var c = Compile(query);
 
             Assert.Equal(
-                "INSERT INTO [Account] ([name], [currency_id]) VALUES ('popular', 'US')",
+                "INSERT INTO [Account] ([name], [currency_id], [pages]) VALUES ('popular', 'US', 100)",
                 c[EngineCodes.SqlServer]);
 
             Assert.Equal(
-                "INSERT INTO \"ACCOUNT\" (\"NAME\", \"CURRENCY_ID\") VALUES ('popular', 'US')",
+                "INSERT INTO \"ACCOUNT\" (\"NAME\", \"CURRENCY_ID\", \"PAGES\") VALUES ('popular', 'US', 100)",
                  c[EngineCodes.Firebird]);
         }
 
diff --git a/QueryBuilder.Tests/UpdateTests.cs b/QueryBuilder.Tests/UpdateTests.cs
index bf3dd7d9..52a22bb5 100644
--- a/QueryBuilder.Tests/UpdateTests.cs
+++ b/QueryBuilder.Tests/UpdateTests.cs
@@ -13,12 +13,14 @@ public class UpdateTests : TestSupport
     {
         private class Book
         {
-            public Book(string name, string author, decimal price = 1.0m, string color = null)
+            public Book(string name, string author, decimal price = 1.0m, string color = null, int pages = 0, int serie = 1)
             {
                 this.Name = name ?? throw new ArgumentNullException(nameof(name));
                 this.BookPrice = price;
                 this.color = color;
                 this.BookAuthor = author;
+                this.pages = pages;
+                this.serie = serie;
             }
 
             public string Name { get; set; }
@@ -31,6 +33,12 @@ public Book(string name, string author, decimal price = 1.0m, string color = nul
 
             [Ignore]
             public string color { get; set; }
+
+            [Ignore(IgnoreOperation.OnUpdate)]
+            public int pages { get; set; }
+
+            [Ignore(IgnoreOperation.OnInsert)]
+            public int serie { get; set; }
         }
 
         private class OrderProductComposite
@@ -132,17 +140,17 @@ public void UpdateWithCte()
         [Fact]
         public void UpdateWithIgnoreAndColumnProperties()
         {
-            var book = new Book(name: $"SqlKataBook", author: "Kata", color: $"red", price: 100m);
+            var book = new Book(name: $"SqlKataBook", author: "Kata", color: $"red", price: 100m, pages: 100, serie:10);
             var query = new Query("Book").AsUpdate(book);
 
             var c = Compile(query);
 
             Assert.Equal(
-                "UPDATE [Book] SET [Name] = 'SqlKataBook', [Author] = 'Kata', [Price] = 100",
+                "UPDATE [Book] SET [Name] = 'SqlKataBook', [Author] = 'Kata', [Price] = 100, [serie] = 10",
                 c[EngineCodes.SqlServer]);
 
             Assert.Equal(
-                "UPDATE \"BOOK\" SET \"NAME\" = 'SqlKataBook', \"AUTHOR\" = 'Kata', \"PRICE\" = 100",
+                "UPDATE \"BOOK\" SET \"NAME\" = 'SqlKataBook', \"AUTHOR\" = 'Kata', \"PRICE\" = 100, \"SERIE\" = 10",
                 c[EngineCodes.Firebird]);
         }
 
diff --git a/QueryBuilder/IgnoreAttribute.cs b/QueryBuilder/IgnoreAttribute.cs
index 4174d106..bf31e9a5 100644
--- a/QueryBuilder/IgnoreAttribute.cs
+++ b/QueryBuilder/IgnoreAttribute.cs
@@ -23,5 +23,17 @@ namespace SqlKata
     /// </example>
     public class IgnoreAttribute : Attribute
     {
+        public IgnoreOperation IgnoreOperation { get; }
+        public IgnoreAttribute(IgnoreOperation ignoreOperation = IgnoreOperation.Always)
+        {
+            IgnoreOperation = ignoreOperation;
+        }
+    }
+
+    public enum IgnoreOperation
+    {
+        OnInsert,
+        OnUpdate,
+        Always
     }
 }
diff --git a/QueryBuilder/Query.Update.cs b/QueryBuilder/Query.Update.cs
index d88aeb00..538ef498 100644
--- a/QueryBuilder/Query.Update.cs
+++ b/QueryBuilder/Query.Update.cs
@@ -9,7 +9,7 @@ public partial class Query
     {
         public Query AsUpdate(object data)
         {
-            var dictionary = BuildKeyValuePairsFromObject(data, considerKeys: true);
+            var dictionary = BuildKeyValuePairsFromObject(data, considerKeys: true, insert: false);
 
             return AsUpdate(dictionary);
         }
diff --git a/QueryBuilder/Query.cs b/QueryBuilder/Query.cs
index 8435eca6..4314051b 100755
--- a/QueryBuilder/Query.cs
+++ b/QueryBuilder/Query.cs
@@ -402,14 +402,16 @@ public object FindVariable(string variable)
         /// and will add it automatically to the Where clause
         /// </param>
         /// <returns></returns>
-        private IEnumerable<KeyValuePair<string, object>> BuildKeyValuePairsFromObject(object data, bool considerKeys = false)
+        private IEnumerable<KeyValuePair<string, object>> BuildKeyValuePairsFromObject(object data, bool considerKeys = false, bool insert= true)
         {
             var dictionary = new Dictionary<string, object>();
             var props = CacheDictionaryProperties.GetOrAdd(data.GetType(), type => type.GetRuntimeProperties().ToArray());
 
             foreach (var property in props)
             {
-                if (property.GetCustomAttribute(typeof(IgnoreAttribute)) != null)
+                if ((property.GetCustomAttribute(typeof(IgnoreAttribute)) != null && ((IgnoreAttribute)property.GetCustomAttribute(typeof(IgnoreAttribute))).IgnoreOperation == IgnoreOperation.Always) ||
+                    (property.GetCustomAttribute(typeof(IgnoreAttribute)) != null && ((IgnoreAttribute)property.GetCustomAttribute(typeof(IgnoreAttribute))).IgnoreOperation == IgnoreOperation.OnInsert && insert) ||
+                    (property.GetCustomAttribute(typeof(IgnoreAttribute)) != null && ((IgnoreAttribute)property.GetCustomAttribute(typeof(IgnoreAttribute))).IgnoreOperation == IgnoreOperation.OnUpdate && !insert))
                 {
                     continue;
                 }