diff --git a/FortnoxAPILibrary.Tests/ConnectorTests/ContractAccrualTests.cs b/FortnoxAPILibrary.Tests/ConnectorTests/ContractAccrualTests.cs
index 972a96ca..c6fe435d 100644
--- a/FortnoxAPILibrary.Tests/ConnectorTests/ContractAccrualTests.cs
+++ b/FortnoxAPILibrary.Tests/ConnectorTests/ContractAccrualTests.cs
@@ -42,7 +42,7 @@ public void Test_ContractAccrual_CRUD()
                 InvoiceRows = new List<ContractInvoiceRow>()
                 {
                     new ContractInvoiceRow()
-                        {ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "6", Price = "1000", VAT = "0"}
+                        {ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 6, Price = 1000, VAT = 0}
                 },
                 PeriodStart = new DateTime(2020, 01, 1),
                 PeriodEnd = new DateTime(2020, 03, 20)
@@ -132,7 +132,7 @@ public void Test_ContractAccrual_Find()
                 InvoiceRows = new List<ContractInvoiceRow>()
                 {
                     new ContractInvoiceRow()
-                        {ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "6", Price = "1000", VAT = "0"}
+                        {ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 6, Price = 1000, VAT = 0}
                 },
                 PeriodStart = new DateTime(2020, 01, 1),
                 PeriodEnd = new DateTime(2020, 03, 20)
diff --git a/FortnoxAPILibrary.Tests/ConnectorTests/ContractTests.cs b/FortnoxAPILibrary.Tests/ConnectorTests/ContractTests.cs
index 97290abd..584055dd 100644
--- a/FortnoxAPILibrary.Tests/ConnectorTests/ContractTests.cs
+++ b/FortnoxAPILibrary.Tests/ConnectorTests/ContractTests.cs
@@ -42,9 +42,9 @@ public void Test_Contract_CRUD()
                 Language = Language.English,
                 InvoiceRows = new List<ContractInvoiceRow>()
                 {
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "10"},
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "20"},
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "15"}
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 10},
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 20},
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 15}
                 },
                 PeriodStart = new DateTime(2020, 01, 01),
                 PeriodEnd = new DateTime(2020, 03, 01)
@@ -106,9 +106,9 @@ public void Test_Contract_Find()
                 Language = Language.English,
                 InvoiceRows = new List<ContractInvoiceRow>()
                 {
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "10"},
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "20"},
-                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = "15"}
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 10},
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 20},
+                    new ContractInvoiceRow(){ ArticleNumber = tmpArticle.ArticleNumber, DeliveredQuantity = 15}
                 },
                 PeriodStart = new DateTime(2020, 01, 01),
                 PeriodEnd = new DateTime(2020, 03, 01)
diff --git a/FortnoxAPILibrary/Entities/Contracts/ContractInvoiceRow.cs b/FortnoxAPILibrary/Entities/Contracts/ContractInvoiceRow.cs
index a558510d..f67090f7 100644
--- a/FortnoxAPILibrary/Entities/Contracts/ContractInvoiceRow.cs
+++ b/FortnoxAPILibrary/Entities/Contracts/ContractInvoiceRow.cs
@@ -18,12 +18,12 @@ public class ContractInvoiceRow
         ///<summary> Contribution Percent </summary>
         [ReadOnly]
         [JsonProperty]
-        public string ContributionPercent { get; private set; }
+        public decimal ContributionPercent { get; private set; }
 
         ///<summary> Contribution Value </summary>
         [ReadOnly]
         [JsonProperty]
-        public string ContributionValue { get; private set; }
+        public decimal ContributionValue { get; private set; }
 
         ///<summary> Cost center code </summary>
         [JsonProperty]
@@ -31,7 +31,7 @@ public class ContractInvoiceRow
 
         ///<summary> Delivered quantity </summary>
         [JsonProperty]
-        public string DeliveredQuantity { get; set; }
+        public decimal DeliveredQuantity { get; set; }
 
         ///<summary> Description </summary>
         [JsonProperty]
@@ -39,7 +39,7 @@ public class ContractInvoiceRow
 
         ///<summary> Discount amount </summary>
         [JsonProperty]
-        public string Discount { get; set; }
+        public decimal Discount { get; set; }
 
         ///<summary> AMOUNT / PERCENT </summary>
         [JsonProperty]
@@ -51,7 +51,7 @@ public class ContractInvoiceRow
 
         ///<summary> Unit price </summary>
         [JsonProperty]
-        public string Price { get; set; }
+        public decimal Price { get; set; }
 
         ///<summary> Project code </summary>
         [JsonProperty]
@@ -60,7 +60,7 @@ public class ContractInvoiceRow
         ///<summary> Row amount </summary>
         [ReadOnly]
         [JsonProperty]
-        public string Total { get; private set; }
+        public decimal Total { get; private set; }
 
         ///<summary> Code of unit </summary>
         [JsonProperty]
@@ -68,6 +68,6 @@ public class ContractInvoiceRow
 
         ///<summary> Vat percent code </summary>
         [JsonProperty]
-        public string VAT { get; set; }
+        public decimal VAT { get; set; }
     }
 }
\ No newline at end of file
diff --git a/FortnoxAPILibrary/FortnoxAPILibrary.csproj b/FortnoxAPILibrary/FortnoxAPILibrary.csproj
index b3de3d34..1d0bfef6 100644
--- a/FortnoxAPILibrary/FortnoxAPILibrary.csproj
+++ b/FortnoxAPILibrary/FortnoxAPILibrary.csproj
@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
 	<LangVersion>8</LangVersion>
 	<PackageId>Fortnox.NET.SDK</PackageId>
-	<Version>3.4.0-alpha</Version>
+	<Version>3.4.0</Version>
 	<Authors>Richard Randak</Authors>
 	<Company>Softwerk AB</Company>
 	<Description>Official .NET SDK for Fortnox API. This package is on behalf of Fortnox AB developed and maintained by Softwerk AB. For more information please visit our repository on Github.</Description>