diff --git a/src/Crowdin.Api/Branches/BranchMergeStatus.cs b/src/Crowdin.Api/Branches/BranchMergeStatus.cs
index 10ca35d6..05accce8 100644
--- a/src/Crowdin.Api/Branches/BranchMergeStatus.cs
+++ b/src/Crowdin.Api/Branches/BranchMergeStatus.cs
@@ -40,6 +40,8 @@ public class AttributesData
             
             [JsonProperty("deleteAfterMerge")]
             public bool DeleteAfterMerge { get; set; }
+            [JsonProperty("acceptSourceChanges")]
+            public bool AcceptSourceChanges { get; set; }
         }
     }
 }
\ No newline at end of file
diff --git a/src/Crowdin.Api/Branches/MergeBranchRequest.cs b/src/Crowdin.Api/Branches/MergeBranchRequest.cs
index c9976e6d..763639b4 100644
--- a/src/Crowdin.Api/Branches/MergeBranchRequest.cs
+++ b/src/Crowdin.Api/Branches/MergeBranchRequest.cs
@@ -15,5 +15,7 @@ public class MergeBranchRequest
         
         [JsonProperty("dryRun")]
         public bool? DryRun { get; set; }
+        [JsonProperty("acceptSourceChanges")]
+        public bool? AcceptSourceChanges { get; set; }
     }
 }
\ No newline at end of file
diff --git a/tests/Crowdin.Api.UnitTesting/Resources/Branches.Designer.cs b/tests/Crowdin.Api.UnitTesting/Resources/Branches.Designer.cs
index 84f91a01..954ed34b 100644
--- a/tests/Crowdin.Api.UnitTesting/Resources/Branches.Designer.cs
+++ b/tests/Crowdin.Api.UnitTesting/Resources/Branches.Designer.cs
@@ -108,7 +108,8 @@ internal static string Request_EditBranch {
         ///   Looks up a localized string similar to {
         ///  "deleteAfterMerge": true,
         ///  "sourceBranchId": 8,
-        ///  "dryRun": true
+        ///  "dryRun": true,
+        ///  "acceptSourceChanges": true
         ///}.
         /// </summary>
         internal static string Request_MergeBranch {
diff --git a/tests/Crowdin.Api.UnitTesting/Resources/Branches.resx b/tests/Crowdin.Api.UnitTesting/Resources/Branches.resx
index 15b9a8d4..2073097b 100644
--- a/tests/Crowdin.Api.UnitTesting/Resources/Branches.resx
+++ b/tests/Crowdin.Api.UnitTesting/Resources/Branches.resx
@@ -1,25 +1,124 @@
 <?xml version="1.0" encoding="utf-8"?>
-
 <root>
-    <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
-        <xsd:element name="root" msdata:IsDataSet="true">
-            
-        </xsd:element>
-    </xsd:schema>
-    <resheader name="resmimetype">
-        <value>text/microsoft-resx</value>
-    </resheader>
-    <resheader name="version">
-        <value>1.3</value>
-    </resheader>
-    <resheader name="reader">
-        <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-    </resheader>
-    <resheader name="writer">
-        <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-    </resheader>
-    <data name="Response_Common_Multi" xml:space="preserve">
-        <value>{
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Response_Common_Multi" xml:space="preserve">
+    <value>{
   "data": [
     {
       "data": {
@@ -37,15 +136,15 @@
     "limit": 25
   }
 }</value>
-    </data>
-    <data name="Request_AddBranch" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Request_AddBranch" xml:space="preserve">
+    <value>{
   "name": "develop-master",
   "title": "Master branch"
 }</value>
-    </data>
-    <data name="Response_Common_Single" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Response_Common_Single" xml:space="preserve">
+    <value>{
   "data": {
     "id": 34,
     "projectId": 2,
@@ -55,9 +154,9 @@
     "updatedAt": "2019-09-19T13:25:27+00:00"
   }
 }</value>
-    </data>
-    <data name="Request_EditBranch" xml:space="preserve">
-        <value>[
+  </data>
+  <data name="Request_EditBranch" xml:space="preserve">
+    <value>[
     {
         "path": "/name",
         "op": "replace",
@@ -69,15 +168,15 @@
         "value": "Master branch"
     }
 ]</value>
-    </data>
-    <data name="Request_CloneBranch" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Request_CloneBranch" xml:space="preserve">
+    <value>{
   "name": "develop-master",
   "title": "Master branch"
 }</value>
-    </data>
-    <data name="Response_BranchCloneStatus" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Response_BranchCloneStatus" xml:space="preserve">
+    <value>{
   "data": {
     "identifier": "50fb3506-4127-4ba8-8296-f97dc7e3e0c3",
     "status": "finished",
@@ -89,16 +188,17 @@
     "finishedAt": "2019-09-23T11:26:54+00:00"
   }
 }</value>
-    </data>
-    <data name="Request_MergeBranch" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Request_MergeBranch" xml:space="preserve">
+    <value>{
   "deleteAfterMerge": true,
   "sourceBranchId": 8,
-  "dryRun": true
+  "dryRun": true,
+  "acceptSourceChanges": true
 }</value>
-    </data>
-    <data name="Response_BranchMergeStatus" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Response_BranchMergeStatus" xml:space="preserve">
+    <value>{
   "data": {
     "identifier": "50fb3506-4127-4ba8-8296-f97dc7e3e0c3",
     "status": "finished",
@@ -113,9 +213,9 @@
     "finishedAt": "2019-09-23T11:26:54+00:00"
   }
 }</value>
-    </data>
-    <data name="Response_BranchMergeSummary" xml:space="preserve">
-        <value>{
+  </data>
+  <data name="Response_BranchMergeSummary" xml:space="preserve">
+    <value>{
   "data": {
     "status": "merged",
     "sourceBranchId": 100,
@@ -129,5 +229,5 @@
     }
   }
 }</value>
-    </data>
+  </data>
 </root>
\ No newline at end of file
diff --git a/tests/Crowdin.Api.UnitTesting/Tests/Branches/BranchesOperationsApiTests.cs b/tests/Crowdin.Api.UnitTesting/Tests/Branches/BranchesOperationsApiTests.cs
index 1f02849c..448b4055 100644
--- a/tests/Crowdin.Api.UnitTesting/Tests/Branches/BranchesOperationsApiTests.cs
+++ b/tests/Crowdin.Api.UnitTesting/Tests/Branches/BranchesOperationsApiTests.cs
@@ -111,7 +111,8 @@ public async Task MergeBranch()
             {
                 DeleteAfterMerge = true,
                 SourceBranchId = 8,
-                DryRun = true
+                DryRun = true,
+                AcceptSourceChanges = true
             };
 
             string actualRequestJson = JsonConvert.SerializeObject(request, JsonSettings);
@@ -226,6 +227,7 @@ private static void Assert_BranchMergeStatus(BranchMergeStatus? status)
             ArgumentNullException.ThrowIfNull(status.Attributes);
             Assert.Equal(38, attributes.SourceBranchId);
             Assert.False(attributes.DeleteAfterMerge);
+            Assert.False(attributes.AcceptSourceChanges);
 
             DateTimeOffset date = DateTimeOffset.Parse("2019-09-23T11:26:54+00:00");
             Assert.Equal(date, status.CreatedAt);