diff --git a/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj b/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
index 0578162..1752996 100644
--- a/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
+++ b/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net</AssemblyName>
     <RootNamespace>Modbus.Net</RootNamespace>
     <PackageId>Modbus.Net.Core</PackageId>
-    <Version>1.3.2</Version>
+    <Version>1.3.8-beta1</Version>
     <Product>Modbus.Net</Product>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
diff --git a/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj b/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
index d0c29f2..d1d931b 100644
--- a/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
+++ b/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.Modbus</AssemblyName>
     <RootNamespace>Modbus.Net.Modbus</RootNamespace>
     <PackageId>Modbus.Net.Modbus</PackageId>
-    <Version>1.3.2</Version>
+    <Version>1.3.8-beta1</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Product>Modbus.Net.Modbus</Product>
diff --git a/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj b/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
index 3f38142..ecd4875 100644
--- a/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
+++ b/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.OPC</AssemblyName>
     <RootNamespace>Modbus.Net.OPC</RootNamespace>
     <PackageId>Modbus.Net.OPC</PackageId>
-    <Version>1.3.2</Version>
+    <Version>1.3.8-beta1</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Description>Modbus.Net OPC Implementation</Description>
diff --git a/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj b/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
index 3c27504..2665b5d 100644
--- a/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
+++ b/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.Siemens</AssemblyName>
     <RootNamespace>Modbus.Net.Siemens</RootNamespace>
     <PackageId>Modbus.Net.Siemens</PackageId>
-    <Version>1.3.2</Version>
+    <Version>1.3.8-beta1</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Description>Modbus.Net Siemens Profinet Implementation</Description>
diff --git a/Modbus.Net/Modbus.Net/Modbus.Net.csproj b/Modbus.Net/Modbus.Net/Modbus.Net.csproj
index ef209ac..ffd5b50 100644
--- a/Modbus.Net/Modbus.Net/Modbus.Net.csproj
+++ b/Modbus.Net/Modbus.Net/Modbus.Net.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net</AssemblyName>
     <RootNamespace>Modbus.Net</RootNamespace>
     <PackageId>Modbus.Net</PackageId>
-    <Version>1.3.2</Version>
+    <Version>1.3.8-beta1</Version>
     <Product>Modbus.Net</Product>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>