diff --git a/Directory.Build.props b/Directory.Build.props
index 38d2a6df5..9a932b136 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -9,7 +9,7 @@
     <DebugType>portable</DebugType>
     <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
 
-    <VersionPrefix>2.6.1</VersionPrefix>
+    <VersionPrefix>2.7.0</VersionPrefix>
     <Title>NPOI</Title>
     <Authors>Tony Qu,NPOI Contributors</Authors>
     <Owners>Nissl Lab</Owners>
diff --git a/OpenXmlFormats/Properties/AssemblyInfo.cs b/OpenXmlFormats/Properties/AssemblyInfo.cs
index 632cffceb..327748b95 100644
--- a/OpenXmlFormats/Properties/AssemblyInfo.cs
+++ b/OpenXmlFormats/Properties/AssemblyInfo.cs
@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.6.1.0")]
-[assembly: AssemblyFileVersion("2.6.1.0")]
+[assembly: AssemblyVersion("2.7.0.0")]
+[assembly: AssemblyFileVersion("2.7.0.0")]
 [assembly: AssemblyInformationalVersion("2.0.0.0")]
 #if NETSTANDARD2_1 || NET6_0_OR_GREATER || NETSTANDARD2_0 || NET40
 [assembly: AllowPartiallyTrustedCallers]
diff --git a/main/Properties/AssemblyInfo.cs b/main/Properties/AssemblyInfo.cs
index 9ae3a4783..ab11ab9db 100644
--- a/main/Properties/AssemblyInfo.cs
+++ b/main/Properties/AssemblyInfo.cs
@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.6.1.0")]
-[assembly: AssemblyFileVersion("2.6.1.0")]
+[assembly: AssemblyVersion("2.7.0.0")]
+[assembly: AssemblyFileVersion("2.7.0.0")]
 [assembly: AssemblyInformationalVersion("2.0.0.0")]
 
 [assembly: InternalsVisibleTo("NPOI.TestCases, PublicKey=002400000480000094000000060200000024000052534131000400000100010095ccd95af3b39d8bc20544d3f47fd24b53ebc5ccb693eaed116290629f8cd882c827ebd511ad59449224f0718d3f9d03b64945a6c8b6644266001b8c8426185330e3d96da70ae16d4acc21b8d4d480f1385c7e924273179375aa88f81380a72fb115712a313379d16aed4aa36208ee3b4a5dd785b06a07b2d868e3227f4495b5", AllInternalsVisible = true)]
diff --git a/ooxml/Properties/AssemblyInfo.cs b/ooxml/Properties/AssemblyInfo.cs
index c43c877fd..64322775f 100644
--- a/ooxml/Properties/AssemblyInfo.cs
+++ b/ooxml/Properties/AssemblyInfo.cs
@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below: 
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.6.1.0")]
-[assembly: AssemblyFileVersion("2.6.1.0")]
+[assembly: AssemblyVersion("2.7.0.0")]
+[assembly: AssemblyFileVersion("2.7.0.0")]
 [assembly: AssemblyInformationalVersion("2.0.0.0")]
 
 //[assembly: InternalsVisibleTo("ooxml.Testcases")]
diff --git a/openxml4Net/Properties/AssemblyInfo.cs b/openxml4Net/Properties/AssemblyInfo.cs
index a80ceb0a8..44c3a27f1 100644
--- a/openxml4Net/Properties/AssemblyInfo.cs
+++ b/openxml4Net/Properties/AssemblyInfo.cs
@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.6.1.0")]
-[assembly: AssemblyFileVersion("2.6.1.0")]
+[assembly: AssemblyVersion("2.7.0.0")]
+[assembly: AssemblyFileVersion("2.7.0.0")]
 [assembly: AssemblyInformationalVersion("2.0.0.0")]
 #if NETSTANDARD2_1 || NET6_0_OR_GREATER || NETSTANDARD2_0 || NET40
 [assembly: AllowPartiallyTrustedCallers]